I made a rookie mistake today, stopped the ride, pressed the checkered flag, took the unit off and while holding it in my hand I was also removing my front light to get it charged. I went home and realized my activity is gone.
Turns out that when you "accidentally" press Discard the confirmation button appears in the exact same place, just to be accidentally pressed again.
I know it's not a frequent thing, and having done it once I'll pay more attention, but why isn't there an option to autosave an activity, disable "Discard" button (I can delete activity in Connect), or at least the confirmation button to appear on the other side (and it should be a Yes/No, not Discard/Save again where pressing No, would show back the discard/save options - then you could either accidentally save, or get stuck in an infinite loop of pressing Discard->No)
(it was 44km - I only recovered 33 of it partially, because even though I immediately powered off, some log file wrote over the activity file)
Consider it my "feature request", but if you have helpful tips, I'm open to suggestions (I'll now save the trip before removing the unit as long as I remember)