I just got done with my project a couple of months ago on the same boat, 1987 H23. I re did the bottom, strippied off all old bottom paint down the gelcoat, fixed blisters, new interlux 2000e, then antifouling. Longest. most time consuming part was getting all the rust and crud off the keel and sealing it with the 2000e. Another very important part was sealing all the deck hardware, mainly the chainplates. You can look at some pics in my albumn and email me directly at
dwylde159@gmail.com for some specifics. Its not that bad once you get in the mode.
Good Luck!