Place the surfboard upside down on your work surface or right-side up if you want the bottom of the surfboard to be the top of the table.
Plan the location of the table legs on the board. They should be placed in the center area on the flattest portion of the board; avoid any area that curves. Generally, the legs should be 18 inches or so apart, depending on the length of your surfboard.
Mark with a pen the areas where the screws will attach the legs to the board. If the table legs came with mounting plates, set a plate on the board and draw circles on the board through the plate's preexisting screw holes. If the table legs are screw-in styles, mark a circle on the board around this screw. Mark the screw holes for each leg. Set the legs aside.
Drill the pilot holes where you positioned the pen marks in Step 3.
Push a wall anchor through each of the holes.
Set the mounting plate for a table leg over one set of the drilled holes. Slot a table leg in position in the center of the plate. Insert the screws through the plate's screw holes into the anchors; tighten them with a screwdriver. If the leg is a screw-on style, insert the leg's screw into the anchor and turn the leg until it is tight against the surfboard.
Flip the surfboard over and place it in a suitable location.