The daggerboard preventor would be a line on the board handle that clips onto to an eye bolt or other fitting attached to the cowl. It will need to be long enough to raise the board for downwind. You will also need to rig a line to keep the board up. Run the line in front of the board and cleat off. After rounding the leeward mark, blow the line and let the board drop. Congrads on a fun boat.