Good question Mac. It's one we ask ourselves every year. It seems the post spawn blues are affecting you as well. I think the key to remember is that big fish don't get big by being easily accessible. When the spawn is over, big smallies go deep. The males will stay another week to guard the nest and that can be great action, but the females run back out to about 10-12 ft near drop offs to deeper water. The key for me has always been to fish either real slow, or real fast for reaction strikes. More emphasis on the real slow. Very natural colors. Again, I swear by the grub and often after the cast, I will not move the line for sometimes up to a whole minute. Then when you pick up the slack, your line is 25 yards away from where you cast it, hence fish on! I down scale to, light line with a long fast rod that absorbs the shock and helps keep fish on with only 6 lb line. Largemouth are whole different deal. Loners stay shallow on docks, trees etc. But again the schoolers and many bigger fish will follow the points out to deeper water. Try a carolina rig on the outside (deepside) of weed edges. Again, fish it slow. Plus I love jerkbaits. either rogues or huskys. The entire action provokes reaction strikes. There is something about a wounded minnow look that big bass just can't pass up if it's presented properly. Just keep the faith man, the summer bite will be on soon. Besides, it's lulls like post spawn that make prespawn so great. It it were Christmas everyday......you know the rest. Hope this helps. I don't claim to know much, but I share what I can.
Rob