There is a few bluff holes on the Meramec in my area where it's shaded almost all day This seems to be particularly good for walleye. If the water is to deep for the giggers then more than likely the walleye there are getting really stacked up. Oh yeah by the way, I have never caught just one in a spot if you have ever caught one, go back to that spot. The giggers on the Meramec are the single most enemy of the walleye. It seems as if there is to many people that can't resist the temptation