Bream attractant...

A fish feeder with floating Catfish feed. They'll turn into straight Democrats in three weeks. Angry and unappreciative too.

Take a few cans of wet dog food open the top punch a couple holes in the side and hang the whole thing by strings off the dock. Between the juice dripping down and bits of food/ maggots they will start hanging around.

Don’t know how involved you want to get but I read an article about laying plastic drums in a circle under and around your dock to create habitat. Some drums have a bunch of 1” holes for bait fish, some have 2-3” holes for panfish and some have 6” holes for bass. Weight them down with bricks or cinder blocks. They claimed it would create a mini ecosystem right there around your dock. Never tried it but always wanted to.

Sunken hay bale

I keep a floating duck that is used to dispense clorine tablets in a pool. I fill it up with dog food and always catch bream around it.

if money is no issue put up a small timed deer feeder and load it with fish food (or even dog food works). Time it to go off around the time you'll likely be fishing, most of the ones we see have the bream visibly stay in the area a few hours waiting for it to go off

How thick would you want the pea gravel? Would 10’x10’ be a good size?

Cottonseed cubes in a panty hose will attract bream and catfish.

Get a burlap sack and dump 50# sack of cheap dry dog food in it with a brick in the bottom. Tie off to dock and throw it in.