I find the Traser/H3 stopwatch has "sticky" buttons and when flying holds (JAA IR training) it sometimes fails to start or stop, which is a PITA.
Oooh errr, a sticky PITA?
This is the exact reason why my wind up analogue stopwatch is worth its weight in gold. The big clunky button starts and stops the hands, the little clicky button zeros them. It takes nothing more fancy than that to sort out the carnage I've made of a hold or timed turn.
