I spent a lot of time trying to source those and looked at the Dakine extensively. They're really tailored to things like a windsurfing board where the board weighs significantly less than you do and they fit tighter. They also are padded more and I would assume that's for barefooted use (which also makes them a tighter fit with shoes on). I'm really happy with the light Magic Marine versions (they fit the existing Dakine bolt holes too).

Note, on those Magic Marine ones - I installed mine so the logos would face the "right/same" direction on both hulls (yeah, I know...but it's just how I am). This put one of the top velcro straps facing back and the other facing forward. The forward facing one will get blasted open by water flowing down the leeward side of the boat. You can wrap a little electrical tape around it to keep it from unvelcroing (is that a word?) but if you install them with the upper strap opening from stern to bow (and one logo upside down), you won't have that problem.