Installing Solar on the truck...

[Chamberpains]

If you wanted a much cleaner look to hold those down you could use heavy duty adhesive backed Hook and loop (velcro) 10lb rating or better. I used the stuff on my 2 roof mounted strobe lights. Clean the surface with some alcohol. Peal 1 side of the velcro and stick it to what your putting on the truck then peal the other side and stick it to the roof. For an added layer of securement and longevity run a bead of RTV silcon around the entire edge to seal out water and dirt from getting in and under the velcro. Those strobes never came off the roof in 6 years and are still up there.

The bigger strobes I had on the previous truck to this last one I added a bead of 2 part epoxy to the leading and trailing sides. This was waaaay over kill but I was afraid a tree strike would tear them off. I whacked quite a few and they never came off. But I also had a hard time getting them off by breaking the bead of epoxy with a chisel and it left 2 small lines of it on the roof. But it was on the roof. The only people that can see them are the government agency tracking you....