Just another Moderator
Join Date: Sep 2005
Location: New Westminster, BC
Thanked 458 Times in 435 Posts
Rep Power: 10
If you're end-for-ending I don't really see the need for double sheets and guys, though it would give you the opportunity to gibe an unloaded pole..
On our last boat (40') dip poling we used sheet/guy combos on a single shackle. It worked fine but pretty much meant a trip forward to blow the guy at the shackle. The advantage would be no sheet/guy drag on the takedown.
Using single sheet and guy, if you have a single trip line for the pole jaws, then you can release both ends simultaneously as you begin the gibe, flying the sail free from the single sheet/guy, then the only real load you might get is putting the pole back on the mast ring on the new guy.. the baby stay will make that even more of a handful but of the crew is on the ball with the guy and downhaul it should be manageable for the foredeck crew. Twingers would definitely be a good idea with this setup.. twinging the 'working guys' down hard midships/max beam will ease the loads on the downhaul, and go easier on the stanchions and lifelines too.
This also means it's easy to blow the guy from the cockpit. With today's lines they can be relatively small and still be strong enough, and so will present less drag.
If you want to stay with separate doubles, then perhaps use lighweight plastic shackles on the sheets, but they won't be up to "guy duties".
A SJ34 is certainly at the upper end for a end-for-end pole setup, but properly steered and sheeted the gibe should be manageable, esp with a fairly strong/stable person at the mast. Any chance you can make the babystay removable for the downwind legs? That would greatly ease the whole operation.
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)
Last edited by Faster; 12-21-2011 at 10:41 PM.