It's pouring outside now so I can't take a photo. I'll try to explain the setup. It's pretty simple. Each centerboard had a short piece of pvc pipe that slips thru a hole in the board. This piece of pvc acts as a kind of axle allowing the board to pivot into or out of the trunk. The outboard end of this piece of pvc has a small hole that has a 3/8"(I think) piece of shock cord with a stopper knot to hold it in place. The other end of this piece of shock cord is formed into a loop. Hog rings work well here if they are taped to avoid scratching. This loop slides over the shroud chainplate with no slack. When you are going downwind you want your boards up, but not completely up into the trunk because the P19 doesn't have gaskets like the Tornado and you get gurgling in the trunk. The idea is to rotate the board up most of the way and lock it in place. To do this you push the piece of shock cord a couple of inches forward of the verticle slot in the trunk where it normally stays out of the way. You then push the centerboard up and rotate it forward until it jams against the shock cord and stays in place. It's a very simple, foolproof system. If this still doesn't make sense let me know and I'll send you photos tomorrow. Greg