I think the main reason to leave rockfish alone is that most species take a very long time (5-10years?) to reach sexual maturity, that and the survival rate of the fish we let go is obviously not that good...ohh yeh...and they will hit anything that moves...i've caught plenty of 6" rockfish on a 6xjr while jiggin structure.
On another note, i can't believe that the MLPA/seal lovin, whale killin weenies don't even seem to care about protecting the rockfish..