Hi TBird,
Something that makes righting a beach cat easy is using the wind to lift the rig back to the vertical position. To make this work, the hulls must be pointed into the wind. A small drag chute will do this nicely. Store the drag chute on the underside of the tramp. When you turn over, launch the drag chute off the bow of the hull in the water and tie the main tow line to the forestay chainplate at the hull. The drag chute will keep the hulls pointed into the wind. Now free up the mainsail traveller control line and sheet in the mainsail. Stand on the traveller car and push it down toward the water. This will take the leach of the mainsail with it. At this time the mainsail will begin working like a sail with a positive angle of attack and generate enough lift to right the boat. This is how I right the RC30.
Good Sailing,
Bill