I'd just keep a high population of <14" LMB and let them hammer the smaller GSF and BG. Keep catching and removing all GSF that you hook. I think draining, rotenoning and starting over is a fast fix, but by keeping constant angling pressure on them, and letting the LMB do their thing you can keep them in control and stay focused on your goals for the pond without starting over.

I'd view the GSF as small LMB in regards to their predatory status in the pond, not as BG.

Last edited by esshup; 06/22/14 12:55 PM.
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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).