The speed was measured with the gps. The digital speedo is not working. The hole shot is ok. I am on plane in about 2- 3 boat lengths. The 25m prop is a 3 blade. I have not checked the engine height. I guess I measure the prop shaft to the bottom right? I work and fished some team tournaments with the guy who purchased Hughs business. That is how I got into buying this boat. He has a Bullit and it is a fast, but, does not take the rough stuff as well as the Cougar. Just need the numbers to go up where there supposed to be. Thanks for the help guys!