It's easy to see how officials on a lake can monitor out board use with the 10 HP restriction. However, and I know I'm nit picking here, but if you had an inboard jet with no markings on it, how do they verify the power or do they have the right to dismiss you out of hand? Mind you, I have no intention of doing anything funny, but I like the mental game playing. Also, if you had a 15 JET it would be equivalent to a 10 HP prop, is that acceptable?