Gui's system is basically SD's diagram upside down.. it's the same tackle.
Since we have a pair of winches free in the cockpit (and an underpowered mainsheet tackle) I tried to set up something to use the winches in that fashion... simply couldn't arrange fair leads to the winches so went to plan B.
1984 Fast/Nicholson 345 "FastForward"
".. 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)