83 30' Southwind parked on hill now won't start

LOL. My son'in law was using my old boat. It stopped running. I asked him if he had planed it out (leveled it). He said no. I said start it and drive it slowly. It was fine. I had to explain how fuel seeks the lowest point. The pick-up tube was in the middle of the tank....the fuel was not. I also told him I could no longer walk on water to help him, since I was on shore and he was in the middle of the lake. My daughter said she would never go out alone in my boat without me.