I tested this boat in the open ocean, facing a 3' chop, then was blessed by the passage of a 70'-plus motoryacht. I already knew the three-footers were no challenge to this powercat's dual-hull design, which packs air into the tunnel to cushion impacts and eliminate slams and bangs. So when that motoryacht went by, I shouted to everyone to hang on tight, firewalled the twin 225-hp Hondas, and pushed it well past 40 mph. I shouldn't have bothered with the warning; the 29 DC met the vertical wall of green water, passed over it, and re-entered on the other side without slamming -- earning a "Woo-hoo!" from everyone onboard.