When I added the center toon with strakes I had the '77 model crank rated 140 Evinrude on it at that point. I also had the Pontoon Water Glide under it. I took the Glide off and added the center toon with strakes and as I remember it would plane out just below 20 mph I think, but i can't be certain. the top speed was a little less than the Water Glide and it was around 35 mph. When I added the strakes on the outer toons I didn't gain any noticeable top end speed but it sure did jump out of the water better. You could just hit the gas about half way and you were on top. When I put the '94 150 HP Johnson Fast Strike prop motor on it with the jack plate I gained almost 5 mph. I'm running a Power Tech Off Shore 4 blade prop with exhaust port holes. I've never had any boat that will hit plane like this one. Crazy for a pontoon.