NT, to your original query, I had a Korr 12"dual row light bar sat on a number plate bracket via a piece of angle aluminium to provide enough depth for the rear of light bar to clear the bumper. The bracket came from Autopro (?) and was fixed with some oversize self-tappers and a few rubber spacers to account for the curve in the bumper.
It was solid enough to almost eliminate vibration on tarmac, although I'd question its longevity on corrugations or off-road. Light spread and depth of the Korr was good enough at sane speeds, and excellent in value-for-money terms.
Sadly, that JGC is no longer with us due to a theft, recovered damaged, insurance write-off saga a while back. Its replacement came with an ARB bar so fitting lights is less of a challenge.