In this tutorial I will show you step-by-step how to fix any damage to your surfboard where the deck or bottom of the board may have been hit by fins or hit rocks leaving big holes in the board. This repair will make your board water-tight again. At the beginning of this tutorial I'll walk you through everything you'll need to prepare and have on hand for this repair. *Please note if the damage is located on the rails of the board, see my other video "How to Repair Fin Chops & Damage to the Rails of the Board '' as the repair differs due to its structural integrity.