In reference to the locking hole for the keel. If memory serves me on my V21 the locking bolt hole should be under the V-berth. The bolt is stainless about 1/2" dia. with a rubber washer and stainless washer on each side with a wingnut. If you sailing on a lake with shoal issues as I am, I use a 1/2" wood dowel and pack the hole with plumbers putty. Not pretty but it works. In case I run into a submerged mountain or sandbar it just snaps the dowel. I ripped out part of my keel trunk once with the bolt in place. Let me know if you find the lock hole. Fair Winds....