In a 25m pool surely another log entry should be "turns"?
i fount it hard, but possible to count laps in a 50 m pool.
in a 25m pool, i lose count at about 10 ...
I did wear a gps .. and it looks like it can give me a lap count even tough indoors
and i don't do any tumble turns .. just 1-4 laps and a breather
