I fish slug-o type baits a lot and often use a treble hook stinger especially for short striking smallmouth. A # 6 treble is a good size for 4 to 5 inch baits.take your trebles and dip the eyes, lightly, in clear silicone sealant and let dry for a day. this will keep it from coming loose when fighting a fish. If you rotate the treble so that the eye is flat against the belly of the bait it will fit over your off-set hook neatly and one barb will fit in the bait nice and straight and it will not affect the action of the bait as much. Slugo's, flukes and similiar baits must absolutley be rigged straight to be affective lures. This can only be achieved by paying close attention to where the hook enters the nose and exits the belly. I see a lot of guys with them rigged haphazardly and not catching as many fish as they could be. One more tip,if the bass are not taking the bait or short striking try speeding up your retrieve with a sub surface'walk-the -dog' action.Good luck.