What WP homies ! A light mover will double the size of the coverage area, if your using HID lights. Been there done that FOREVER ! As far as LED's go, I've not used a light mover YET ! I'm wanting to but I need a plan of action. I  also agree with building the lights to fit better in tents ! Heck... 4' T-5's, fit perfect in a 4x8 tent.