for bass? or crappie? lol i know its in the bass section but gotta ask, and i never do, but I'm sure some ppl maybe use small eight weight finnese jigs...
I use 100% fluoro to fish football jigs because on a casting rod can cast farther... thumbing slows down the reel too much for me with the braid. I also fish it in clear, deep water situations with little cover. On a spinning setup I would use leader in clear water but wouldn't bother in stained water. Cover is also a consideration for abrasion resistance (where braid really excels), grassy point versus heavy wood cover etc.
I use a spinning rod with 12 lb floro. It's deadly for finesse jigs. I'll use small pork trailers on a Texas finesse jig in the summer when the fish get real pressured. Works great. Good luck!