Re: The last 3ft (mast work)
I've seen where just two equal-level mast steps have been installed 4-5 feet below the truck so that the person up there has real solid footing and a good height to work on things at the masthead..
Avoids the run of steps all along the mast, and puts less load on the chair, lines, etc once you're 'up there'.. a telephone linesman's waist strap will improve the setup even more..
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)
1984 Fast/Nicholson 345 "FastForward"