Where can I get a Jib sock for my furled jib - or do I need one? While I've usually towed with the jib removed from the furler i DO have a sunbrella edge for the jib and would like to tow a couple hundred miles next month without fooling with the messenger rope;lubing furler guides;and of course the extra time prepping for raising and afterward to add to my already long raising/rigging process(I have lots of safeguards just in case anything goes wrong and it takes me close to 2 hours to be ready to launch)and reduce the number of times I have to convince my arthritic knees and artaficial hips to climb in and out of the boat during the process. Does it have to be made of canvas or will some other material do? I call home base central NJ... If you can't tell from the pic on my avatar, I have a 76 V21 and the jib(from a smaller precision would be my guess) is barely an 100% masthead rig.