Took a Sea ride on a 22' cuddy cabin and the 150 wouldn't turn up more than 3500 rpm's. The Salesman said it had the wrong prop and was just wondering what would be the right one for this setup. We are suppose to try it again this weekend, and would like an Idea of which prop I should be looking for before we go out again. I know the 150 sounds small but this is a used boat and will have to stick with it, just wanting to get the most out of it. Thanks