Strop for temporary stay or shroud

[Stillraining]

Just anchor your jib or spin. halyard to whatever angel purchase you need and tighten carefully with your winch...then make the repair...I think a repair could be affected just as quick if not quicker then messing with some sort of "Strop" around the mast that may slip anyway and caus multiple trips up the mast.

I carry a used forestay on my boat..it is the longest piece of rigging on the boat...It has one Sagged eye and a Stay-lock in a baggie taped to it..If I ever loose anything I would temporarly support as mentioned and then when conditions allowed go aloft and swap out the offender...it can be cut down to length and used where needed.