Hey NYF, Welcome to PBF!
With regard to removing SF, one common approach is to remove fish in the size class one size smaller than your biggest. For example, if your biggest BG seem to be 10 inches then you can harvest some 6 to 8. This will retain that spawning capability you mentioned, retain your best genetics and..... give you a chance to hang into some bigguns for fun!
Bill D.
Last edited by Bill D.; 05/30/17 07:34 PM.