I currently have a Gheenoe LT15 with a Suzuki 15hp 4 stroke with the stock 3 blade aluminum prop. At present I can only manage about 21 mph with my, the wife, 5 year old daughter and fishing gear. I would like to see if I could get a little more top end out of it. Also I'm not sure if I should go with a 3 or 4 blade SS or one of the composite props. Also would adding a wing type on the motor help at all as I seem to always have a water shooting up both side transom. Also any info on were to purchase a good prop would be helpful. Thanks.