We got a 21 Kaiyen and have had zero issues getting a great wave for surfing. Did drop in 500 lbs of lead in the rear lockers but it worked without the lead as well. Still recommend the lead as you can then get more weight in the back so the front bag will actually fill up while still achieving the pitch. I use autowake and tweak the pitch and roll to maximize the amount of ballast the boat can hold. Usually around 8.5 to 9.5 pitch. -2 roll. Prefer to put the wake plate at 0 but it always moves back to 25 for some reason after picking a rider back up. Using the default settings for surf plates which is 60 or 70. I did have to burp the bags initially. Have checked since and haven't needed to burp again.