910xt and swimming: another attempt

Tried another swim with the Garmin Forerunner 910xt and much the same as yesterday, it reckons I’m doing far more lengths than I actually am. Some people seem to have zero problems but for me, it literally counted double what I actually did today. Granted, I need to improve my technique since I’m just learning, but I’d have thought it would have been possible to merge lengths together once uploaded. Alas, no…

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