Experiencing somewhat of the same issue as Hossmagnet. Back in the end of May 2009, I found an inlet from the river (the river turns into a reservoir about 1/2 mile down). the water depth I was fishing was about 6 feet. I was casting at a rock bank with a drop off.
In any event, on two consecutive days, I caught and released numerous smallies, the smallest of which was about 2 lbs. among those were two 4 lb ers.
About 3 week ago. 3 of us caught and released a number of 3/4 to 1 1/2 lb ers, among which each of us caught a 2 lb er. By the way, the 2 lb ers fought like crazy and much harder than the previously mentioned 4 lb ers.
Yesterday, I went to the same spot and I managed 3 that were about 1/2 lb.
Where , I ask, have all the big ones gone. I will try deeper areas, per the above suggestions, probably out of the inlet, and down river to the reservoir. I'l llet you know if I find them. they gotta be there somewhere.