Well, unfortunately...
from your responses to date, you can see that not alot of people have attempted this modification. The best advice I can give is go to "Boat Information" tab at top of home page, go to "Model Information" on that tab, scroll down left side and click on 35.5 (yes, 35.5), then look below "For Sale" boats at bottom right side of page, and click on "Windlass install" in the photo articles. Alex Lopez did as good a job documenting the installation of a windlass on his 35.5 as anyone has ever tried and I venture that most everything he did could be duplicated on a 33.5. Not alot of other choices I don't believe.