This is an extensive primer on adding sink tips to your Skagit line. I particularly liked the part about those past generations of tangled sink tips (with permanent ink markings as to density) in leader wallets (or some scuffed up zip lock bag) in a gear bag. Now I have to sort through all those sink tips in those two leader wallet my kid dumped into the gear bag long ago.
“Many folks have sink-tips from older generation Spey lines like Rio’s Windcutter or Airflo’s Delta Spey. Usually, they’re completely tangled up in some old shooting head wallet. They live in our gear bag but never get used. Guides love it when you ask if you can use them, especially when you have no clue what they are or where they came from.” (Rusty Hook)