Nope, Pat. I've never gone 75 mph in a Sea Ray (kind of a slow hull, aren't they?) But I have gone 75 mph in a Remak 24' drag boat hull with a 408 Windsor stroker with a 671 blower for power...... Maybe that doesn't count though, it ran on methanol with just a small touch (4%) of Nitro to help with the tune up..... We don't play much with pleasure boats out here.....