May be facing an imbalanced fishery leading to overpopulation of skinny, under performing LMB. If you are not going to perform rehab on the pond you can address this dynamic by improving cover for BG and boost the available forage and cull all LMB in the bottlenecked range that are not performing. If you are planning on pond rehab you'll be starting over from scratch so you don't have to worry about the current status of your fishery.