I'm not a regular swimmer but found myself in an indoor pool recently and decided to give the Pool Swim mode a go on the 935. I don't think it was accurate and I'm trying to work out how much of that is my fault and how much is the watches.
I remember reading that it used the accelerometer to pick up one when a length was completed and to push off firmly from the wall. I did that every time, but it seemed to be wildly overestimating distance still - it'd jump up 150m at the end of a length (when the pool length was set to 50m) or not record anything at all at the end of some lengths. It was pretty erratic. By the time I finished it was overestimating by at least 50% (based on a best guess/rough length count.)
Two things that may have played a part - for most of the lengths I wasn't turning and kicking off - I was stopping for a short time, then kicking off forcefully when I started my next length. And some lengths were a mixture of strokes. Could this have played a part in accuracy?
So how much is me, and what can I do to improve the accuracy?
Side issues - in GC I was able to manually go in and change the number of lengths to a more realistic figure but when I exported the .fit file (so I could replace the one on Strava) it still showed the original distance in Strava. Any ideas why?
