I’ve seen a few people wondering how wide tailed boards can work in bigger waves.
My experience has been with the Surftech McCoys: 7’, 7’6", 7’11" {single and tri) and the 8’2".
I initially approached bigger waves with quite a bit of trepidation on these boards. I’ve had wide tailed boards in the past but they have only been designed for small waves, and I found them pretty much uncontrollable in bigger waves.
But hey, Geoff’s web site says that all of these boards are good from 2’ to 10’.
What I found with these boards was that they actually got looser and easier to turn as the waves got bigger (8’/ double overhead is my limit).
When you look at what is going on in the bottom contours, and especially the tails, you can see why. They have lots of rolled V and significant chines as well, both across and along the board.
The attached photos of the 7’11" show this. There’s a bit of distortion in the closeups, but at the edge of the rail the distance to the straight edge is 1/2" on the side and 1" at the tail. The dome gets progressively smaller as the board size decreases, but it is still significant even on the 7’.
With these bottom contours, as the board speed increase, the board sits up more out of the water and rides on the dome, so it becomes easier to turn, as opposed to concaves and flats where it becomes more difficult to turn. As these forces are going up as the cube of the speed (if you double the speed it is 8 times harder to turn) the advantages of this bottom shape become more pronounced at higher speeds.
Obviously, there are limits with these particular boards for bigger waves: I would like to look at some of Geoff’s guns to see what he does.
I would like to hear what experiences others have had in bigger waves with wider tailed boards.