only been in twin 525 one. Once it hit about 74ish to the top speed of 83ish it would just wave at all the lookers. Nothing bad, but the feeling i got was that it just wasn't packing enough air to ride on. Two years ago the sonic rep at the Jacksonville Poker run said they were building one with 700's. I haven't seen any of the sonic built ones yet or heard about them...so who knows how it would work with more power. Though i do like the style of the boat..just not the hop.