#pourover

So I bought a Garmin 245 to track my kayak casting practice and it’s garbage at measuring pace during the stop-start motion. Now I’m trying to use it to time my pour-over coffee and it’s throwing off my brew time by 10 seconds every single time. I’ve got a Hario V60 and a $120 grinder dialed in to 18g yield, but the inconsistent timing makes it feel like I’m guessing. Anyone else use fitness trackers for coffee timing? What even is the point of these things if they can’t handle something as simple as a 2:30 brew cycle? I’m over here with a lukewarm cup that’s either bitter or weak depending on the day.