Do you have solar panels on your wheel house roof?
I talked to the designer when framing the boat as how to reinforce the framing for a deck stepped mast. Looking at others who have mast such as Carquinez Coot, Koala, and others, I came up with some dimensions. Overall height is 20', with the boom being 5' off of the deck. I wasn't sure about how high to have the boom off the deck, but 5' seemed reasonably out of the way. The boom is 14' long. I didn't think about welding bits on the roof for warpping a line to controll the swing of the load, so I have to burn some paint and get those welded in place. The roof overhangs the cabin sides by six inches, so I can weld the bits in at that location and not threaten the paint or spray foam insulation in the cabin ceiling.
Conall's Boat Build