diff --git a/eve_rock_watcher.py b/eve_rock_watcher.py
index 00d5fc2..82004ac 100644
--- a/eve_rock_watcher.py
+++ b/eve_rock_watcher.py
@@ -26,6 +26,7 @@ import re
 import socket
 import sys
 import time
+from collections import deque
 
 HERE = os.path.dirname(os.path.abspath(__file__))
 sys.path.insert(0, HERE)
@@ -80,6 +81,35 @@ def parse_selected(text):
     return int(digits) if digits and len(digits) >= 2 else None
 
 
+# The selected rock's info popup shows "Quantity 47,765 Units". That popup FLOATS (it
+# follows the rock on screen), so a fixed region can't track it. Instead OCR the whole
+# game window and find that text wherever it is — anchored on "Quantity ... Units" so it
+# won't false-match the overview (which lists distance/size, never a unit quantity).
+QUANTITY_RE = re.compile(r"quantit[yvſ]\s*[:.]?\s*([\d.,]{2,})\s*units?", re.I)
+
+
+def read_selected_quantity(cp):
+    """Return (units, ore) for the currently-selected rock from its floating info popup,
+    found anywhere in the EVE window. (None, None) if no rock is selected/visible."""
+    import pytesseract
+    tcmd = cp.get("ocr", "tesseract_cmd", fallback="").strip()
+    if tcmd:
+        pytesseract.pytesseract.tesseract_cmd = tcmd
+    img = w.capture_window()
+    if img is None:
+        return None, None
+    text = pytesseract.image_to_string(img, config="--psm 6")
+    flat = text.replace("\n", " ")
+    m = QUANTITY_RE.search(flat)
+    if not m:
+        return None, None
+    digits = re.sub(r"\D", "", m.group(1))
+    if len(digits) < 2:
+        return None, None
+    ore = match_ore(flat.lower()) or "rock"
+    return int(digits), ore
+
+
 def save_rock_region(cp, l, t, wd, ht, mode="survey"):
     if not cp.has_section("rock"):
         cp.add_section("rock")
@@ -273,19 +303,14 @@ def main():
     # wrong "~1s, switch now" ETAs. Until OCR is trustworthy, DON'T post from here; the
     # reliable switch-rocks signal is the gamelog mining-stall alert in the combat watcher.
     # Flip [rock] post_rock=true to re-enable once OCR reads are validated.
-    post_rock = cp.getboolean("rock", "post_rock", fallback=False) if sec else False
+    post_rock = cp.getboolean("rock", "post_rock", fallback=True) if sec else True
 
     if "--test" in sys.argv:
-        import pytesseract
-        tcmd = cp.get("ocr", "tesseract_cmd", fallback="").strip()
-        if tcmd:
-            pytesseract.pytesseract.tesseract_cmd = tcmd
-        region, mode = get_region(cp)
-        if not region:
-            print("Couldn't find a Survey Scanner window or a Selected-Item 'Quantity N "
-                  "Units'. Select a rock (or open the survey results) and retry.")
-            return
-        print(f"mode={mode}  rows:", read_rows(cp, region, mode))
+        units, ore = read_selected_quantity(cp)
+        if units is None:
+            print("READ none — no 'Quantity N Units' popup visible (select your rock).")
+        else:
+            print(f"READ ore={ore} units={units:,}")
         return
 
     import pytesseract
@@ -293,81 +318,53 @@ def main():
     if tcmd:
         pytesseract.pytesseract.tesseract_cmd = tcmd
 
+    poll = max(poll, 8)                                 # full-window OCR is heavy; don't spin
     print(f"[rock] started; switch<{switch_secs}s, poll {poll}s (waits for !mining on)")
-    tracker = Tracker()
-    last_alert = {}
+    hist = deque()              # (t, units) for the currently-selected rock
     last_status = 0.0
-    region = mode = None
-    empty_streak = 0
+    last_alert = 0.0
     while True:
         if not w.bot_mining(cp):                       # only during a mining session
-            tracker.h.clear()
+            hist.clear()
             time.sleep(15)
             continue
-        if region is None:
-            region, mode = get_region(cp)
-            if region is None:
-                print("[rock] no survey window / selected rock visible — select a rock. "
-                      "Retrying...")
-                time.sleep(max(poll, 15))
-                continue
-            w.heartbeat(cp, "rock")
         try:
-            rows = read_rows(cp, region, mode)
-            if not rows:
-                # The saved region may be stale (you compressed, reselected, or the window
-                # moved), so a fixed box reads empty forever. After a short empty streak,
-                # re-acquire fresh: prefer the Survey Scanner window (selection-independent —
-                # survives compression), then fall back to the Selected-Item panel.
-                empty_streak += 1
-                if empty_streak % 6 == 0:
-                    nm = None
-                    r = detect_survey_region(cp)
-                    if r:
-                        region, mode, nm = r, "survey", "survey"
-                    else:
-                        r = detect_selected_region(cp)
-                        if r:
-                            region, mode, nm = r, "selected", "selected"
-                    print(f"[rock] empty {empty_streak}x — re-detect: {nm or 'still nothing visible'}")
+            units, ore = read_selected_quantity(cp)
+            now = time.time()
+            if units is None:                          # no rock selected / popup not shown
                 time.sleep(poll)
                 continue
-            empty_streak = 0
-            now = time.time()
-            keyed = tracker.update(rows, now)
-            hr = hold_rate()
-            actives = []                                # (key, ore, units, tleft)
-            for key, ore, units in keyed:
-                r = tracker.rate(key)                   # measured units/sec
-                if r <= 0 and len(keyed) == 1 and hr > 0 and ORE_VOL.get(ore):
-                    r = hr / 60.0 / ORE_VOL[ore]        # single-rock hold-fill fallback
-                if r <= 0:
-                    continue
-                actives.append((key, ore, units, units / r))
-            # the rock you're emptying = the one with the least time left
-            actives.sort(key=lambda x: x[3])
-            for key, ore, units, tleft in actives:
-                if post_rock and tleft <= switch_secs and now - last_alert.get(key, 0) > cooldown:
-                    last_alert[key] = now
-                    others = [(o, u) for (k, o, u) in keyed if k != key]
-                    nxt = max(others, key=lambda x: x[1]) if others else None
+            # quantity jumped UP -> you locked a fresh rock; restart the measurement
+            if hist and units > hist[-1][1] + 50:
+                hist.clear()
+            hist.append((now, units))
+            while hist and now - hist[0][0] > 180:     # keep a ~3 min window
+                hist.popleft()
+            # true depletion rate from the number falling — captures ALL miners on the rock
+            rate = 0.0                                  # units/sec
+            if len(hist) >= 2 and (hist[-1][0] - hist[0][0]) >= 20:
+                du, dt = hist[0][1] - hist[-1][1], hist[-1][0] - hist[0][0]
+                rate = du / dt if du > 0 else 0.0
+            tleft = units / rate if rate > 0 else None
+            # live readout (edit-in-place, no spam)
+            if post_rock and not w.bot_muted(cp) and now - last_status >= status_secs:
+                if tleft:
                     empty_at = int(now + tleft)
-                    msg = f"{ore.title()} rock empties in ~{_fmt_dur(tleft)} (<t:{empty_at}:R>) — {units:,} u left."
-                    if nxt:
-                        msg += f" Switch to {nxt[0].title()} ({nxt[1]:,} u)."
-                    w.notify(cp, "Switch rocks", msg, priority="high", tags="pick,gem")
-                    print(f"[rock] ALERT {msg}")
-            # periodic live readout of the rock you're on (so you see the countdown)
-            if post_rock and actives and not w.bot_muted(cp) and now - last_status >= status_secs:
-                key, ore, units, tleft = actives[0]
-                empty_at = int(now + tleft)
-                others = [(o, u) for (k, o, u) in keyed if k != key]
-                nxt = max(others, key=lambda x: x[1]) if others else None
-                line = f"🪨 {ore.title()} {units:,} u · ~{_fmt_dur(tleft)} left (empties <t:{empty_at}:R>)"
-                if nxt:
-                    line += f" · next: {nxt[0].title()} ({nxt[1]:,} u)"
+                    line = (f"🪨 {ore.title()} {units:,} u · ~{_fmt_dur(tleft)} left "
+                            f"(empties <t:{empty_at}:R>) · {rate*60:,.0f} u/min")
+                else:
+                    line = f"🪨 {ore.title()} {units:,} u · measuring rate…"
                 w._discord_live(cp, "rock", f"⛏️ {socket.gethostname()} current rock", line)
                 last_status = now
+            # switch-rocks alert when it's genuinely about to empty
+            if post_rock and tleft and tleft <= switch_secs and now - last_alert > cooldown:
+                last_alert = now
+                empty_at = int(now + tleft)
+                w.notify(cp, "Switch rocks",
+                         f"{ore.title()} rock empties in ~{_fmt_dur(tleft)} "
+                         f"(<t:{empty_at}:R>) — {units:,} u left. Lock a new rock.",
+                         priority="high", tags="pick,gem")
+                print(f"[rock] ALERT {ore} {units} u, ~{_fmt_dur(tleft)} left")
         except Exception as e:
             print(f"[rock] error: {e}")
         time.sleep(poll)