Ed, I went ahead and cut the beast out
I followed previous examples and left the aft wall ( w/the chain plate ) intact. Afer removing the forward cupboard and partition, I slacked the stay and then cut down the sides and across the bottom of the anchor locker well. I did this from the inside of the boat. Next, I fitted the backing/replacement plywood and epoxied it to the back of the original locker fiberglass. I put in two temporary bolts to "suck" the plywood to the fiberlass while the glue set. The next day I cut out the old locker 2inches below the hatch cover seat. I removed the "bitter end" U bolt from the bottom of the original locker pan and then tossed the remainder. As for the location of the new floor of the locker, I wanted to go as low or deep as possible and still leave a few inches between the bottom of the new locker and the level of the berth platform, in order to allow drainage of the locker with a through hull. Also, I didn't want the locker to be so deep that the floor of the locker ended up being so narrow it was a problem to stand in. I selected a depth of 24 inches for the top of the locker floor, which was about 2-3 inches below the existing locker drain through hull, and the aft end of the locker floor ended up being 2 feet wide. The old through hull was removed and glassed over and a new through hull was placed approx 4 inches forward and 6 inches lower. The primary motivation for the project was to create a water barrier to the berth and enlarge the locker enough to perhaps store an extra propane tank etc. The boat is new to me and when I finally took a look in the lockers below the V beath, the forward one had about 3 gallons of water in it, that had come from the anchor roller plate bolts or from the manual anchor winch mount, I assume. I will get back to you on the weight issue with respect to your anchor chain ( I have 60 ft, with the rest rode) and my thoughts on whether to go lower with a hawser (sp?). I have a bunch of pics, but I don't know how to reduce them to the maxfile size, so I will talk to my 13 year old son on that issue. He and his brother wanted a ski boat, or at least a sail boat that they could watch videos on and plug in their guitar amplifiers to. But I digress. Look for the pics, etc in a week.