I use stinger hooks in most of my large streamers for trout (keep in mind, you can't use these in FFO waters due to hook restrictions).
In my experience, large trout and other toothy critters often make it a habit to seize prey crosswise or from the rear. They do this because they can and their teeth allow them to hold smaller fish. In my large trout streamers, the stinger hook often gets more fish than the front hook due to the tendency among trout to swipe or short strike the fly. Bass, on the other hand, don't have the mouth or tooth structure to seize large fish crossways and are much more likely to inhale the fly front first. This is why a single, front mounted hook does so well with bass when used in a streamer fly (or rubber worm or soft plastic).
In the salt, you see the same process with bluefish, which have teeth, when they seize the fly/lure at mid section. Bluefish lures do much better with a hook in the rear. Stripers, like freshwater bass, will usually seize the front.
