I'm usually a tail up guy. Don't know why been doing it that way for awhile. What do you guys like and and specific reason why?

tail up, just feel like it swims better that way. 

I was always a tail-down guy, but over the last couple years I've switched.

I feel tail-up makes the body of the bait wiggle back and forth a little as the tail twists. Tail-down results in action of the tail only.

I go tail up..........................unless, I am trying to keep the bait up high in the water. Tail down give it a little "lift"