I have been reading for while before purchasing a pontoon and really enjoy the forum. We looked for several months before finding a premier 225 with a 115 merc 4 stroke. Very clean unit with low hours. We took it out over the weekend with five people and pretty windy conditions, but I thought this setup should get close to 30 mph. I did not get the gps out but near dark on smooth water we were only seeing 23 or 24. My intial thought is stainless prop. I realize they aren't made for speed, but just a little slower than thought. I was pushing 5k RPM at WOT which didnt appear to be much a load on the motor. We were cruising at 4k at 20 mph. I know bass boat but not much on toons. I can say that it used very little fuel for the amount of riding we did which I prefer, but like I mentioned just expected a little more. From the performance on bass boats I was looking at stainless, but dont know that it matters on the toon. Thanks any help is much appreciated.