You could take a bit more time when the fish are stocked and fin clip them. While the fins will grow back, if the fishermen are educated, they can tell if a fin has been clipped or not. I was going to suggest floy tags, but the fish are too small for that.

Texas has a "Share a lunker" program. Have you looked into that?

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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).