Try Goose Hummock. I don't know the sink rate but I used one all last season and love it! One caveat though- DON'T over stretch it!!! I did this when I got hung on a pilling and the fellow whos boat I was on just backed off untill the leader parted. It caused a kind of corkscrew in the line which I believe was caused by the core and coating stretching different amounts. I called Airflow about it and they gave me some BS about the kinks being caused by catching too many schoolie bass, which they say twist the line. Thta's just a line of BS. BUT- it's a good line and I have three now- 8-10-&12 wts. Sci. Anglers also has a new prototype out with a clear mono core and short head-cast very well. Not like that kinky slinky so called "Striper" line with the coated braided running line- a real piece of crap- I sent mine back with a nasty letter.