Throw out a hook line and sinker, worms will get ya most species. Might run into other species but unhook and throw back, nothing illegal about that. If all your catching is bass then yeah move down a bit. Plenty of spots I can think of where a difference of 10yds goes from all smallies to all eyes, to cats, to suckers, etc.
Some great fishing to be had for carp, catfish, suckers and bound to catch others along the way. Just be respectful of the fish and release in a timely manner without it flopping all over rocks and youll be all good.
Id stay away from a jig, that would seem suspect to me in areas closed season.