Understood on the budget and work group.
So, you should probably have already been on some type of culling program for the LMB, and if you have not done any harvesting, it's certainly time to start.
Without any further data, some general culling guidelines could be:
1) Pull all LMB with less than 100% RW, or less than 105/110% RW if all LMB are well over 100% RW.
2) Take out all LMB under 16" unless they have a RW over 100% or higher. You could have a higher length limit if you wanted to boost more growth of the bigger LMB, say 18"
Regarding the CNBG, that seems odd that you don't catch any over 6". This may mean that you don't have adequate forage for the CNBG. I'm not sure how you can change that without a feeding program, however, if you want bigger LMB, then you really are not looking to remove forage fish that can spawn and/or be eaten.
An electroshock survey should allow you to really dial in the culling program.
