Hi Diane.....kevlar is a pain and not really necessary IMO...GSP is a pain too and not readily available at most flyshops Ive been to.....On big flys I use flat waxed nylon. I have yet to break this stuff and it slides easily on the shank which makes packing the hair easier. On irrisistables and other amaller flys I use 12/0 Benichi. You are in for some fun now!....Jason

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"There's always room for one more wrap of hackle"