The only problem with coiled leaders, especially fluorocarbon coiled leaders, is... the coil. When undone you end up with a leader that looks like a slinky. And when slow trolled they act like an Archimedes pump screw, slowly twirling light jigs like a spinner.
And the coil set gets worse the longer the leaders remain coiled. Which is why the leader stick I posted earlier works best for my fishing buddy and me.
Tom