after running music for a long moment on the battery when youre a long trip back to the dock and there is no one on the river ( ideally at night ) put your throttle lightly out of neutral, just to be sure no one noticed and try to start the boat, and then just panic because the boat is out of juice to get back !!! it works better when people are wasted on the boat.
Ok i know this one because last year i caught myself hahha, i was pissed off because the boat didnt want to start i was sure the battery was drained but i was not in correct neutral position. I know music played and everything so theres power on the battery thats why im telling you its better to do it wasted hahaha