Linda, one of the things I usually do is watch carefully and as I come to the end of the seam, I'll reach over and grab the hand wheel and stop it before it goes too far.
Also when you start again, turn the hand wheel to get the machine going then take over with the treadle. Some of my machines I can start them by the pedal and they'll go the right direction. The one I was working with last night was being a cranky so and so and wanted to stall and turn backwards. So I ended up using the hand wheel a lot more than normal.
pinkcastleDH,
I haven't paid any attention to where the foot pedal is when I stop either. I'll pay more attention to it when next I use a treadle.
Joe