yes, the most popular are either the malibu-style paddles that swing out, or the nautique-style plates that slide out. both have been used with success. i found the malibu-style was easier to implement for me, and most people use that style when building their own. my first implementation during testing was a simple wal-mart cutting board (15"x20") with the board cut to match the hull contour. mounted that to a couple 2x4's that were cut to sandwich the platform edge, held on by ratchet straps. took maybe an hour to build and had great results. do a little research on "ghetto-gate" and you'll see many many similar implementations to draw inspiration from!