I use an actual mover in veg to gain about a 20% bigger footprint with good results. In regard to rotation, I do rotate my plants on basically a daily basis in flower, but in regard to moving plants in and out of better light, I would maximize the light on your best girls, and leave the lesser ones in the side lighting. I think you would be doing yourself a disservice by sacrificing the light slightly on all the girls through rotation rather than making sure your best plants get optimal lighting as much as possible.