Thnx SS
Actually the "twirl" is the fish using its body, like a rudder, swimming in a big circle. Sometimes they get the line to vibrate.
I'm using 2lb. copolymer line Stan either izorline XXX or (mostly right now) Yo-Zuri. I don't get a lot of line twist, but these days, I'm changing line - a lot.

Some of the beds I looked at today would probably make you crazy - there were some very big fish (10" & 11") on them! The nests were as big as a trash can lids in 9 to 11 FOW.