ive got a new lowe R1860CJ woth a 80hp at the pump jet on it(optimax). i have never had a tunnel hull before and had a ? for those that do. how high do you normally trim up the motor when running at full throttle to get max speed? only reason i ask is becuase i was a tourney last weekend and got flat smoked by a 17ft with only a 40hp jet on it. now granted the boat and motor ways a little less. but with two good sized guys and all the gear they had on it had to come close to what mine was. i couldnt even keep up with them, they just kept gettin farther down river. i had one guy tell me to trim it up till the water quit splashing up in the back. maybe i have to play/learn with it more.