Yeah, I've been digging around and from what I understand it's really bad to use a manual adjuster on any sort of serpentine belt. Like Carl said there's something they don't like about being over-tensioned.
I intended to have the tensioner on the slack-side of the belt and an idler on the tension side, I just didn't know if it mattered how the tensioner arm oriented in relation to belt travel. It would be easier for me to mount one against travel, as I have more room towards the blower about than I will towards the drive pulley, but I've already got my stock tensioner to fab with so I'll just use it.
:edit: And the only reason my hood comes up is to change my induction setup or my oil. No way is keep up on tightening a manual tensioner. LOL