Deni Couch wrote a lovely song called Fairisle about the wives of fishermen from that island knitting their spouses jumpers to wera whilst at sea, each one had a different design, so they could be recognised if disaster happened, it is on Mad Rush's 'How Well I Remember CD . Deni is a Mudcat member and runs The Hyde Folk Club in Plymouth, I'm sure she'd be happy to sell you her CD!
Cheers, Lucy