It really depends what your fishing for. If you are fishing for Crappie I would use the small fatheads. Walleye, Smallies, and LMB use the Large Fatheads. If you are going for Pike or LMB use Roaches.
I usually try hooking them thru the lips at first but if thats not working I will hook them in the tail or right behind the dorsal. Sometimes when u hook them this way it is just what the fish are looking for. As Augy said it is hard to swim with a hook in your back. Yes, the minnows die quicker but the struggle more, in turn can give that xtra erractic action of a struggling fish that the will fish will sense in their lateral line.
As far as hooking in the eyes I was told not to do it. Mainly for the reason that you want your minnows to see a predator ready to strike. Did u ever notice ur bobber bouncing frantically right before a strike? The baitfish fleeing from a predator, can make the him a little more agressive to strike the bait, I do guess that it also can deter a him from striking too, but I am willing to take that chance. IMO
After I wrote this I realized that you are going for bass, LOL Use large Fatheads.