What may partially help is to use traps to catch as many of the bullheads as possible. Remove every last one you catch. Try to fence off an area with netting to exclude as many fish as possible from that area and try to get underwater plants established there, even Eurasian Water Milfoil. It's an invasive, but can, once established utilize many nutrients to help clear the water. Try to do that on the upwind side of the pond. Then look into doing an aluminum sulfate treatment to the pond, that should help strip out even more nutrients.

Remove every Largemouth Bass that you can that is over 15"-16", that will allow more of the smaller LMB room to grown and in doing so they will consume more of the smaller fish.

Run a trotline daily baited with hot dogs, chicken livers, etc (not worms) to catch even more bullheads.

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3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).