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!
'88 Sunsport, 2250lbs ballast, automated surf system, home made surf exhaust, surf flap, ACME 913, Krypt 6.5 HLCD's, Perfect Pass Stargazer
2007 Centurion Typhoon to be upgraded this winter!