I have a 2019 SXP25 tri toon with ESP and a F250 Yamaha. I didn't get into a lot of questions with my dealer around prop size/pitch, etc when I took delivery. They just said they have a lot of experience with matching props/platforms and that I would be fine. In fact, I don't know my specs yet (but will). I know it's 14.5 stainless with 4 blades. Yesterday on the Ohio River I opened it up for a very short time as I'm nearing the end of my break-in period. The water was choppy and I'm still trying to get used to the trim. The boat plowed through the chop nicely but when I did open it up I recall the RPM's getting close to 6,000 and my GPS showed I was only hitting 32 MPH. I don't need a speed demon and all but honestly expected much more than that. I was hoping I'd have enough power for 40MPH. I'm hoping it was the chop in the water and my inexperience with the trim and will keep trying and keeping better records. I of course will call the dealer when I have more data. Is 40 MPH for a 25 foot tri-toon unreasonable? It was me and my wife with 3/4 tank (50 gallon tank). Thanks. Steve