He said everyone quotes dead rise for boats (21 degrees for the 210/220, I believe), but he said that the measurement is taken at the stern and no one drives boats backwards into waves. He said a good measure of how a boat will perform on a rougher lake is its forward angle of attack. In my case, he felt unless I needed the extra space in the 220, the 210 was a better boat for my lake. He says it has more freeboard than the 220 and a more aggressive angle of attack.
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Well....Yes and no.
He’s correct in the fact that deadrise is measured at the transom.
Our first boat had a TRUE deep vee hull—-24 degree deadrise from bow to stern. It’s what made the Donzi and Cigarette boats so fast in rough water. ...& how they won so many races in adverse conditions. The boat rocked from side to side more (not as stable) yet cut through the water more effectively. At the time, 24 degrees was found to be the optimum combination of speed and stability. This hull was developed by Ray Hunt in the fifties & sixties.
http://www.huntdesigns.com/deepv.php
Then the variable (aka modified) deadrise hull came to be. Sacrifice some ride for more stability (so folks would not rock around as much) by varying the deadrise toward the bow. This is the most common hull for family boating...particularly in runabouts. Ie Cobalt.
Today, a deep vee is considered 20 degrees or more at the transom which then varies toward the bow up to 25 degrees with reverse chines to help with spray and stability.
The less deadrise, the more stability but the more pounding you’ll take. (Ski boats are a perfect example as they want the flat competition Ski wakes).
Yes, no one drives fast backwards.
What he fails to mention (really just a salesman tactic), is that when you’re up on plane moving along, the back third of the boat is in the water. Yes, deadrise back there matters if you don’t want the crap beat out of you.
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