I like to approach my "sweet spot" and not make any cast until I get in what I believe is the perfect position for the conditions, and make a few well placed casts. After the first few casts on a spot I will continue to fish that spot but my cast will be what I believe to be lower percentage casts. Not that it always works out and sometimes I catch on the lower percentage casts, but I try to approach the few sweet spots I have found to maximize my results.