I. guaranteee you they were useless. It helps to have another person to mount it if not on the ground, but you can do it yourself. I've installed over 10+ mysel

I. guaranteee you they were useless. It helps to have another person to mount it if not on the ground, but you can do it yourself. I've installed over 10+ myself. At the same time, since people saying it's difficult and such - I should start selling this as a service :P