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I'm making a map with the zoo terrain, I'd like to put a boat that circles the island with a .50 cal on tripod on it. I got the boat to circle island, but the .50 cal on tripod stayes floating in air where the boat starts at. Any way to fix this?

impossible, you cant moddify vehicles, its best not to worry about it and use a patrol boat that already has some 50s on it.

OK thanks, that's what I thought, but wasn't sure. Can you tell me then, My patrol boat doesn't wait on anyone to get on before it takes off, I've got an area trigger, but I'm not sure on how to set it up, or an event either. I'd like to learn how to get it to take off when someone gets on it goes through the waypoints and stops when it gets back until someone gets back on.

if you know how to group area triggers how area triggers are supposed to be grouped then we're already half way to your goal.

make sure the boat isnt starting off being directed on a waypoint. go to the events and make an

IF:
ssn (whatever) is within area trigger 1

Then:
redirect ssn (boat) to waypoint