I have a Procraft 1650 bass boat with Johnson 115. I am running a 21 pitch prop (what came on it), no jackplate. My hole shot is awesome, boat planes off almost immediately. I weigh 210 and I usually carry my son that ways 135. We don't have a ton of tackle, 8 rods, tackle bag, 2 batteries, 12 gals of fuel average, small cooler bag. I am averaging 41 to 43 mph (GPS). I feel like I should be getting more speed...??? I have read about boats that are 17ft running in the 50s with a 115 (I know every boat is different). What could I do to increase speed? Jackplate? SS prop? Different prop pitch? I can afford to lose a little hole shot, again because its really good. Thanks for your help !