Mover's Film
I don't know what else to call it, but I think it's what was being referred to in the first response.I use a roll of mover's packing film and 1 wide piece of velcro. I pull all the shrouds together, and in order (so they lay back out properly when I raise the mast) pulling them as far aft as they will reach. Then I wrap the shrouds to the mast with the velcro. After that, starting in the back, I wrap the entire mast (and shrouds) with the plastic wrap. Some people have told me it's overkill to wrap the whole mast, but I don't agree. The goal is twofold, keep everything on board and in place, and make sure the wrapping stays on in the wind until I'm ready to take it off (which is why I start from the rear).Before I started doing this, I used rope, bungees, and velcro (I never tried duct tape, gotta admit). It was faster getting going that way, but when I got ready to step, I always had a tangle of shrouds to sort through, and twice I lost clevis pins.Since I started wrapping the mast (5 times now), I've not lost a part, and what I lose in the "getting ready" end, I make up for when it's time to step the mast. The shrouds lay out nicely, and there's nothing to untangle.