SUP Traction Deck Pads, come in a  1 pc pad, for 8'8 to 10'6 SUPs. They have pressure adhesive backing. Size  about 8 foot x 28" wide, trimable to fit shorter or narrower SUPs.
Fits from 8 foot to 18'8 foot SUPs. 
Diamond upset pattern on soft EVA foam with a 3M backing.