It takes time and looking. You must have the best map that you can find of the lake. This will help you get some idea of potential honey holes . If you are familiar with the lake where your tournament will be, start close to some structure that has good spawning areas nearby. I have found that if you can find a good hump, tank dam, point, or brush in the area that the potential exists for concentrations of fish.
Big fish are also likely to be in the area.
Finding these hot spots has never been easy for me. Very seldom have I just looked at a map and decided a certain spot looked right, went to it, and caught a bunch of good-sized bass. What I usually find is that fish are holding in just one certain area or little spot on the structure. A good example of this happened to me in a Honey Hole tournament on Richland-Chambers. In practice I was studying the map and noticed some contour lines that formed an underwater point.