I got this boat over the winter. I test drove it and with 3 of us in there we went about 42mph. After rehab to the floor and seats over the winter, now it will only go about 37mph at 4600rpm. I had a delay in take off of about 3 seconds and I found, thanks to iboats, the accelator nozzle were clogged. I cleaned them out and ran some seafoam through it and now it take off great. Well, still not sure were my speed went , but this weekend I went out and plugged the kids on a tube and rode around the lake. After about 3 1/2 hours my 20 gallon take was empty. That seems like alot and considering all lake dont have gas pumps, that could be a problem. I havent tuned it up yet, but it idled so good that i havent go to that yet. Is this gas usage normal?