I think the more shallow a lake the more it is affected by falling water. Even though fish can travel a long distance they are basically lazy creatures and want to use as little energy as possible. That being said the deeper the lake the more the fish can move vertically and change depts versus horizonatally to move the same dept in a shallow lake. With the majority of lakes being around summer pool or above at this time, I have found fish will move out to where the "original" shoreline would normally be at this time of year. Fish that have spawned in the past will return to the same areas and some use the same beds. Some people make the mistake and still fish too shallow in falling water. My thought is they are worried that the water will disappear around them and will not just move out a couple of feet but may move out to the first point, drop off and such. I know a couple of years at Ky Lake when the water was 4 feet over summer pool in early April and you would have thought they would all be in the flooded buck brush, they were actually right on the "original" shoreline and were very easily taken with texas rigged creature baits and crankbaits targeting this depth.