I've got a 65L custom which has just returned from 5 weeks in Maui. I paid full price and even so it is half the price of a KT, a relative bargain. I winged and PW'ed it and it is super easy to pump up onto foil.
The dimensions are 5'4 * 21", I've tried skinnier and longer mid-lengths but I prefer this shorter, slightly wider option for stability prior to getting up on foil. I also have the tint resin and after using it daily for 5 weeks, plus air travel, it doesn't have a scratch on it so pretty happy with the durability.
My boxes are also in the wrong position for GoFoil but for other brands I think they would mount dead centre. My foil mounts within an inch of the back of the box.
The only other slight negative is the centre mount rear footstrap plugs. I did specify offset and parallel to the centre line but they're right on the centre line so basically unusable. Front plugs are spot on.
