Just got a 1854 welded John boat. It's made by a company called oquawaka. And it's custom so I don't have specs for it. I did send the company a request for info. It's covered in aluminum diamond plate and seems to be a real heavy Guage aluminum throughout. The bottom of the boat seems real thick. Handling it at the dock also gave me the impression that it's a pretty heavy boat. It's powered by a new 90/65 4 stroke Yamaha jet and the impeller looks great.. With me and my kids I about need to run 3/4 throttle to plane niceley. So not much power to spare. This boat does have sharp keels running down its width. I'm wondering if I should cut those back. Maybe air is the problem?