I'm looking at buying a pontoon boat with a mercruiser I/O motor. I'm trying to get the guy to take it out so I can test drive it but he is telling me that it is winterized and if we take it out we will have to re-winterize it afterwards since there will still be a chance of freezing. His solution is to run the motor in a barrel so I can see that it runs. Well I'm no boat expert but wouldn't running it in a barrel still flush all the antifreeze out and require a re-winterization?? Plus I'm not hip to just running it in a barrel. I want to see how the motor does under a load.