My Lockley Newport LN23 was salvaged. The center board had rusted into the keel. Initially, we had it on boat stands and a boom truck attached with straps located near the bow and stern as a safety backup. We used a saws- all on a slow speed to cut the center board out of the keel housing. I then had a stainless steel center board laser cut and shaped to allow for better flow of water around the center board. The previous owner, I think, neglected regularly checking the center board as the hole in the center board had wallered out to 3 times the size of the pivot pin. While waiting for the new center board to be made, we placed the boat back on a borrowed trailer while I was having my trailer reinforced with a larger center piece of channel steel on which a 2x10x10 treated wood was attached for the keel to rest on. When I had the trailer specially made for the boat, according to boat specs, the trailer needed support 2500 pounds. The manufacturer used 4 inch channel. I left the 4 inch channel in place but had a 2x8x10 channel welded over it and an additional two 4" cross members welded in on both sides from the outside frame to the wider and thicker center piece of channel. When the new center board was ready, I hauled the boat on the borrowed trailer to a local boat yard which had a boat lift. They hoisted the boat up with chain hoists placing boat stands for added safety; we were then able to attach the new center board with a new pivot pin and the lift cable that runs up through the keel trunk attaching to a set of blocks with rope/line then through the deck and back to the cockpit. He did not charge me for the boat lift as he wants to do my next bottom job. You might not get the same deal but to me, using a boat lift and 5 boat stands as safety was the best way for me to get my new center board in place and the boat transferred back to my trailer. I know I said a lot here, but I want to express how important it is to be as safe as possible when planning to work under your boat on the dry. Even then, stuff can happen very quickly.
James