I'm not one for using an overly big hook so far, except in certain conditions. When longline trolling, a bigger hook, like a #2 or #1, is the norm with some folks that do that a lot. I use 4, 6, and 8 regularly with good success. Recently I've been using sickle hooks from Matzuo and I have to comment on the difference of the hook up. Most of my fish caught with regular round bend hooks, Aberdeen mostly, have been hooked in the periphery of the mouth in the thin membranes. I have had some jigs that were taken very deep and required hemostats to remove the hook, but that is not the norm. With sickle hooks I notice that the hook is buried deeper in the mouth, usually in the roof where there is more substantial flesh. Hemostats are needed almost every time. The gap on the hook is different and wider than round bend hooks and much sharper. My thoughts on size is that it needs to be proportioned to the overall jig itself(or minnow) and if missed fish are noticed a change in size is needed. Might be bigger to eliminate the miss, or smaller to get them to take it deeper. Just my two cents, good luck and tight lines.
Creativity is just intelligence fooling around