I use live Bream about 3 fingers in size and hook them right behind the
dorsal fin so they can swim around like an injured bait fish.

It is legal to use game fish for bait as long as you catch them
legally.... no traps or nets, just a pole, bobber, and bait.

It is easy to float a live bait around, but I am unconvinced it
produces more bites. I have actually had one floating around while I
fished with a plastic worm and the plastic out produced the live bait.
May have just been an accident.