Big Bait vs. Little Bait

What size crank do you reach for in the middle of summer?  Do you go for the 3 inch jig or the 4 inch?  This time of year it's important to know the cycle of the bait and the ecosystem you fish.  Plenty of food for fish to eat means you have to either match the hatch OR be different and draw their attention.  Reaction strikes on big baits is a great way to catch summer fish.  Sometimes a smaller bait and slower presentation is the key for well fed fish.  Lets talk bait size and what consideration you should give that.