I purchased a 1978 Nordic Bubbledeck from my father-In law last summer, and I have been totally stoked on the boat with one exception. The darn thing has a serious porpoise problem at higher speeds from about 60 to the current top speed of about 75. I guess the problem was much worse at one time. My father-in law had a lot of work done to get it where it is at today. The guys at Jet Boat Plus in Havasu City blueprinted the bottom put on a droop snoot and made a custom ride plate for it. The motor is a BBC I believe bored to a 468 ci, Dominator pump, dual 750's with tunnel ram. The intake grate is stock and I was thinking of going to a loader grate. It doesn't really have a shoe, the ride plate is one piece and where it attaches to the boat it kind of looks like a shoe but I don't think it functions as one. The ride plate is not really adjustable, I believe it was at about 1.5 degrees up and I shimmed it down to zero with no significant results. I'm thinking now that I need to go the other way and maybe go to an adjustable plate. I would like to get a loader grate and maybe go to a straight snoot. I don't really know if I need a shoe and I don't really want to add weight to the bow. I know the boat will go faster than 75 but I just want a smooth ride at 75-80. When I put the place diverter all the way down it is much better but it plows and I don't get the speed I want. I've heard that the place diverter should be adjusted so you are putting a rooster about 3-5 feet off the water. Please help me out, this is an amazing ride and I just want to smooth it out a bit more. Thanks in advance for any assistance.