Originally Posted by Sabreman
If you have roller furling, chances are that you have a 2nd slot in the headstay. You can hoist a 2nd jib in that slot and drop the #1. This is how a racing headsails are changed. But this begs the question that risk is induced by requiring someone to go forward to hoist/secure the sails. With a full crew it isn't an issue. With kids and short handed, it's a problem.....
Problem with this idea is that you can't actually lower the original sail and it's swivel if the smaller sail is already in the second groove..
Many furlers are equipped and designed to be able to remove the drum and use the foil as a racing foil, but the swivel is left low below the luff gate to facilitate sail changes as described.
Changing to the proper sail before you leave the dock, esp if we're talking mainly daysailing is the way to go...
If you did try to use a wire luff jib I'd use a deck-based tack fitting rather than the furling drum's. But I think the small sail working in the disturbed air of the rolled up genny would be less than ideal....