I was going to mount mine on a light bar on the front but was concerned about hitting something and tearing it up or someone ripping it off. I ended up installing it in the grill which solved both concerns.
I was limited to a 20" bar with this configuration but it works fine for my use. I thought about mounting a wider bar on the roof but I was afraid it would interfere with my kayak/bike racks, plus the aforementioned security issue.
They are being stolen around here so that is a good solution to the problem.