It's too long for me to read, frankly.
Of course, all we are doing is speculating on the original poster's anecdotal information. As such, it's hard to see how one can then make conclusions that seem to be presented as definitive information.
From what I can tell, the OP has strong case of overpopulation of Black Crappie, a lack of forage, and a lack of predators that can keep Black Crappie numbers down. Material changes have to be made to right the ship.
OK, so at least extend me the courtesy of withholding judgment of the merits of my commentary. If you don't have a thorough understanding of the commentary then you are unqualified to judge its merits. I will encourage you to doubt it and seek to find fault with it. In so doing, you will learn what the commentary is and why I made the rec I did. What you will find, is that I will do everything I can to answer your questions and provide the basics of the analysis. If you like, we could take it offline. I am a very helpful person that you don't even know yet. Honestly, I don't think you would disagree with the commentary based on the information the OP provided if you take a deeper look under the hood. You may appreciate some things you might learn from it to apply elsewhere.
I agree that the OP data appears rather anecdotal and subject to the error of memory. I addressed this and presented the recs as "tongue in cheek" and "tentative". I warned the OP that for the analysis to be good, that his data from whence the analysis is derived must also be good. I tried not to inject my own impressions of a pond I have never seen nor fished. I trusted his observations because that is all I had to work with.
This is very interesting water that seems to have produced 4 lb LMB in 5 years in Minnesota. Reasonable growth, I think. The BG per the poster just meet minimum expectations for quality fish. The BCP have attained lengths >12" with more than 50% of the biomass of crappie concentrated in >10" BCP (per the OPs population proportions). Dang, its a dandy lake really. The crappie are thin (maybe other species are too), but this can be corrected by harvest. Having only the OPs observations to work with, the >10" population was already over represented but I just can't see thinning this size of BCP with predators. It makes a lot of sense to me to filet them. The effect of adding predators may help down the road after the existing populations >10" BCP have long since died. It will take time to influence the condition of fish in the >10" tier of BCP by using predation.
