I run WOT on erie rollers all the time and my lund is light in the bow TM/starting batteries are in the back You should definately be adjusting the trim once you get on plane . My father in-law was told not to mess with it "it's not needed" his boats a 18'6" bowrider and it always feels like your going to speer a wave because the bow is to low and it "Falls" off of the waves and is porpoising all the time ,scares the crap outta me. I have tried to explain the trim to him but he takes his buddies advice over mine and just leaves it trimmed down all the way and put a hydrofoil on it .