[Fr. Frank]

Originally Posted by kmoose

....To me putting that much HP on a Tsunami is like dropping a blown hemi in a Vista Cruiser.

What's wrong with a blown hemi in an Olds Vista Cruiser? Sounds like fun to me.

Without making a radical change in the shape of last 6' or so of the keel line, there is no way to stabilize the hull at 60+ with only a single engine, and with twins you'd still have to be da&^ good on that helm. Chine-walking a single outboard without a flat pad on the keel running from the transom forward always leads to one of two things: getting scared and slowing down a bit, or losing control.

Remember, the VDH hull HAS NO HORIZONTAL PLANING SURFACES! When you get the hull up on to the center V section alone with a single engine, and with the rest of the hull out of the water, it becomes hydro-dynamically unstable. That's just physics and is unavoidable.

If you want stability in a SeaCraft hull at 65+ MPH, you need to modify the hull keel line, run twins with K-planes, or add hydrofoils and become foil-borne with the hull out of the water.

I've rigged a single 20' SF to go over 60 with a Merc Bridgeport, and it was extremely squirrely; no, dangerously squirrely.

Like so many, I LOVE the ride of my 20' Seafari offshore in 2' seas at about 17-18 mph. SSSMOOOOTH! No jarring my back, and I can ride sitting down.