Good job on collecting data. Creel and visual surveys only tell part of the story. You may be catching the same (easy to hook) LMB repeatedly. I suggest you have an electroshock survey conducted to get a bigger picture. My guess is it is time to harvest any poor quality (low RW) LMB. Also do a seine survey to determine if the existing (over 1 yr old) LMB have spawned. RW on spawning LMB varies a lot between Feb and Sept.