I'm not sure if this is the answer to your question..In fact I'm not really sure what the question is.
If it's how do you carry these big boards if you don't have a built in handle..This might work for you.
You just need a couple of tie-down straps...and an old shoulder strap..I got this shoulder strap off my Naish padded sup bag.
It makes the board so easy to carry..and it leaves your hands free to do other things..

......It costs nothing..

DJ