Re: Tacking a Genoa?
The only way to avoid the sail dragging across the rig would be to roll it halfway up, then tack and redeploy it... Lotsa work and I think you'd tire of it quickly.
You can ease things by adding shroud rollers to make it easier for everything to slide by, using a larks head attached one-piece sheet to minimize the bulk of a couple of bowline knots, and hold the sheet a little until the sail is inverted before releasing and pulling in on the new tack. It's less likely to get snagged on something that way.
The sail will survive quite a long time despite the "abuse". Make sure the leech line is enclosed and protected without hanging out.. They can catch on mast hardware. Keep an eye on the UV cover.. Probably the first place you'll see any issues.
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)