The 4 lb. I furl is a bit thick but the fishers here use them for bass bugs and larger deer hair flies. The 6 lb. Vanish is used here for Pike, Muskie and heavy bass slop fishing.
Here is a copy of the little description sheet that I have sent out to the fly shops that carry my leaders.
Trouter excellent dryfly, fish wet as is or apply floatant and it is a floater (I use Red Mucilin myself) Breaking Point 7.5 pounds, 6/0 Uni
Finesse excellent dryfly, fish wet as is or apply floatant and it is a floater (I use Red Mucilin myself) A bit tougher then Trouter but not as soft.
Breaking Point 10.5 pounds, .004 Nylon
Basser excellent for weed and heavy cover, fish wet
Breaking Point 18 pounds, 4 pound Mono
Game Fisher excellent for toothy critter, fish wet for Musky, Pike, Walleye and large fish like Carp. A good Saltwater leader as well, sinks great.
Breaking Point 45 plus pounds, 6 pound Fluorocarbon