fob key

So I'm out today and the boat is running awesome, but suddenly it would randomly shut off while at speed, or just idling. I'd pull the key and put it back on the post, hear the beep, and it would fire right back up and run fine. This happened a number of times. The last time it happened however...

I am new to the forum and have a 96 bombardier gti that just clicks at the solenoid when trying to crank it.It was doing same thing earlier and i changed the starter and got it to crank.Put it in the water and it had no power and then took on some water.I cleaned the plugs and drained the water...