I have a typical 10'4" SUP board from another brand. It has a mast track so you can use it with sail power, but because of the rocker shape it can never get planing.
It sure would be nice, both for waveriding purposes and for flat water freeride purposes, if it could plane.
So far the only board I've heard of that can sup well AND plane well is the Exocet WindSUP, which has a step-tail design.
But that board has a crummy allgier daggerboard system and at 360 x 79 cm and 220 liters it's a size or two larger than would be ideal for me at 75 kg.
Are there any SUP boards in the starboard line that plane WELL? Why aren't more people making step-tail boards?