I installed an electric windlass on our 82 Oday34.
I closed off the area forward of the v-birth to use as chain locker, built a mounting bracket inside the anchor locker to raise the windlass to deck level, then cut a hole in the lid to expose the windlass. I added a drain for the chain locker. I used a piece of 4" abs pipe between the windlass and the bottom of the anchor locker and sealed the bottom around the pipe to keep as much water out of the lower chain locker as possible. It is Simpson Lawrence (now Lewmar) vertical windlass using 1/4 high tensil chain. If you are truely interested I would try to email a few pictures to you.
Brad