That motor is old enough to enlist
good for you, two strokes can run forever. I'd keep her running unitil you know for sure, I had a mature motor a few years ago (75hp 1986 rude, which is still in service today), and like you, she was started and stopped on the trailer, fish didn't seem to mind the idle noise (of course to stay at idle, I'd have to give a few more rpms in neutral)