If you use "Search" above you will find several posts regarding a windlass on the H33.5. Then in "Owner's Mods" under "Boat Info" you will see that there once was a 33.5 project but it was lost in the conversion. Turns out that I have access to the old board as one of Phil's helpers. But I cannot find it over there. There is a very complete one there(but not here) for the 35.5. But I don't know that you would like it because it is a deck mount, not an anchor well mount. With Phil's permission I could move that one over. You might also check the H37C Owner's Mods. My own manual windlass installation inside the anchor locker is documented there.
Update: found the picture filed under H37.5. No text other than "here is my windlass installation".