I think I want to buy the next boat you sell!!!....
. The other findings on survey I credited to buyer $3000 grand for. ...
If that tygon hose is coming off and that's how you're losing the coolant then that would make sense. Clamp that thing down or plug the hose barbs like Nater suggests. I think you really should have a hose with reinforcement, as the cooling system should withstand about 15 PSI which can come from it warming up properly.