A month or two late on this post but better now than never. Since most are getting ready for winter steelhead, thought I might share my 2 cents on sinktips. Most people are on the T-14 program for winter which is great stuff but in my opinion T-11 gets down just as fast. It's thinner so it cuts thru the water better and is more enjoyable to cast. The other option for most are 15' sinktips like those that came with your ancient Windcutter or Delta Spey line ten years ago. Yes, these tips will work but there is not much difference in depth between fishing one that is 12-13' versus 15'. In recent years I have opted or shorter tips after much trial and error. Through the years I found that a shorter section of T-11 got down just as fast(and stays down) as any 15' tip. A lot of that has to do with current and the fact that the longer tips accounts for more belly in the tip, causing it to swing towards the surface throughout the drift/swing. Shorter tips seem to stay down better and have a hell of a lot less hinge and belly. So, if you're still fishing those 15' tips, think about cutting em back to 12' and making up some T-11 or T-14 tips to go along with em. Your flies will stay at a more consistent level and who knows, your casting with an ungodly 6" string leech might improve! These days I fish more 8-11' sections of T-11 than anything else, but thats just me. I would opt for 7', 9', 11', and 13' of that T material.