I still think he could get away with a lot of travel relatively unseen by following the railroad tracks - say from the Pepsi Plant to alongside S640W all the way in to Hyrum and the JBS Meat plant area.
It goes past the skate park (he'd know it well), pas the baseball diamonds, completely through the golf course in a relatively obscure area that would not get a lot of foot traffic, through some industrial areas that would be quiet before dawn on a Saturday and through a couple of subdivisions, where he wouldnt be spotted by doorbell cameras.
I would encourage LE to look intensely along those lines. They are not much used and there are lots of old warehouses and sheds in the industrial areas