Nice way! Thanks boss! Had been thinking myself!What? It's too much effort to alot 30 seconds every morning to wind your watch before you put it on? Sheeesh!
As for how do you know how many turns is fully wound it's simple if you think about it. Fully wind it one morning and the next count the number of turns it takes to fully wind it again. Take 20% off that and as long as it's still running next morning you have your number of turns.