yea…start talking nose concaves and you’ll start a whole 'nother debate with some around here.
I agree that the only true concaves commonly seen are under the nose of a noserider. I love 'em myself.
Burnsie,
Thanks for the input.
I’ve been reducing the roll in the front so that the intake is as flat as possible (the rails are lifted) so the board gets on a plane faster (to let me drop thickness and still paddle into waves). I’ve probably overdone it and have to back off a bit. Version #8 of the “same” board coming up… Drop the width 1/4", puff up the mid-rails 1/8", put a bit of roll back in the bottom. That’ll do it! (until the ideas for #9 start creeping in!)
While the principles being discussed here are useful, it needs to be recognised that a point can be reached where the feature stops adding positive and starts to be negative. That point can be really subtle in terms of measures (a couple of mm one way or the other).