That is also the closest lake to me. 10 or so years ago I fished pickthorn 2 or 3 times a week for crappie even if for an hour or two before work. there are a couple ditches with structure on the north east side that ran out toward the middle that would always hold fish in the winter. about 6 years ago we got to where we couldn't catch fish in pickthorn so I stopped going. I've tried it 3 or 4 times a year since and have'nt had a good day in years. I don't think over population is a problem. Whatever the problem is I sure wish it would get corrected, even if the problem is me.