I got this Naish TT for free (Thanks!) as it has a crack above the red line on the top and I'm looking to turn it into a pocket foil board but I'm not sure how much I need to strengthen it.

I'm going to chop it down where I've marked red and put carbon or fiberglass strips where I've marked green. Would this be enough to strengthen and stiffen it enough to use for foiling? Should I do anything else?

Also, to make the fiberglass/carbon stick to the board better do I need to do anything special other than sanding it?

The board I'm using now is just a bit of marine ply from bunnings and it weighs a tonne but works. I can water start straight onto the foil so I'm just looking for something that will be light and just buoyant enough to float with my alloy foil.

Looking for any suggestions or ideas as I want to make something that will last awhile.