At what point on a given lake do you call it quits? I live in elizabethtown,ky and we have a local public park with a 100 acre lake. I know there are fish there but I just can't seem to locate them here. I can drive an hour or so and hit a couple bigger lakes that I can consistently catch fish but for some reason this little lake drives me nuts. At what point do you decide to give up on a lake. Also this lake also has no visible cover in the water, no vegetation, just nothing besides some Christmas trees the park people dump in there.