i use them for smaller baits... i also use them when there is a ton of Dollys and such around, it keeps them from stripping the eggs off out of the loop...

they all seem to work for me, ive caught Kings, Silvers, Pinks, Chum, Rainbows, Cutts, Dollys/Bulls, and even Whitefish on them... personally, i dont find them any less effective than straight skein eggs, depending on where you are fishing... to me, its all how you cure your eggs in the first place which is what is going to entice bites... i like to think i have perfected that part of it.... but i havent... theres just too many ways now to do it...

they also work good in super rocky streams and keep the skein baits from getting beat to death on the bottom of the river... they still get bumped obviously, but they stay as a bait, and not a battered piece of mop....

just my 3...