[Licensed to kill]

Not sure how reorienting the tube to the back will change water loss but, depending on how much bend is required, you could just add a short length of hose and ruin it wherever you want. I've never done this but one way you may be able to bend it without kinking is to put a rod in the end fro leverage and as you slowly bend the tube, lightly tap on the side where it is bending with a body hammer to keep the side from bulging out and thus causing a kink. Slowly and carefully you should be able to move it without kinking i would think. Again, I have not done this, just spitballing.