While creeking it, in a larger pool, i normally throw a walker near the lay down if it is early or late. If the topwater opportunity has died off, i will pitch softplastics around it. Normally i don't spend a whole lot of time on these areas, while it looks so promising, my bigger fish and numbers don't come off the cover. It is more important to me what lies beneth, i pick more fish up in the middle where there are boulders, that you just can't see, until you trip over it.
There are some smaller pools that will have a lay down, that day/week, and those normally hold fish. I take a soft plastic and let the current control it. The fish will eat it up because they happen to be stacked right in that area. Like any flow, cover is subject to change and sometimes quick.