Want to know one reason the walleye population in Redstone is not good? Redstone is not a walleye lake. Without aggressive stocking (which hasn't happened for a few years), there would be NO walleye in the lake. Why? Walleyes need moving water with gravel/sand bottom to reproduce. Both inlets to Redstone are muck bottom coming from farmland to the north of the lake.
You keep going back to catch and release being the reason walleye numbers are low, which may be part of the problem. The REAL problem is there is no natural reproduction to replace the ones kept. Stocking walleyes is not cheap. Through the efforts of local clubs and the lake association, one should be grateful to be able to fish for walleye in Redstone at all.
If you know of a lake in Illinois that has great populations of white bass, go fish for them there! Or drive 25 minutes to Castle Rock or the Dells and fish the Wisconsin River for walleye and white bass.
Redstone is a great fishery. Yes, it gets a lot of pressure, both fishing and pleasure boating, which can affect fishing and force anglers to adapt and adjust presentations. It can be a difficult lake to fish, especially on weekends when the out of staters are up and there is a lot of boat traffic. In any case, white bass are not the answer.
Strict catch and release can be a bad thing as well. Carrying capacity is a real thing. A lake can only support a given tonnage of fish. If you catch and release everything, you can end up with stunted growth. I do not agree with overharvest, but if I have the,choice, I'd rather catch three 19" walleyes that are 5# each than catch 15 walleyes that are 13" and weigh 1# each, even if I have to fish harder for the 5# walleyes. Something to think about.