Alot of the guys I've seen use lights mounted to the bumper. The problem is that after plowing a for while, they're usually covered with snow and muck, and you have to get out and clean them off. The thought that this guy had was that if he got them up higher, he'd get a better view anyway, and like I said, he was cheap. I do have a solution, but it's painful.
I have a friend that works for an oil well service company. He's out in all weather types and is NOT nice to equipment. That being said, he convinced his company to buy him some of these.
I can't give you his specific model number, but he has two of these on his truck. He has one spot, and one flood, and they are BRIGHT! They have wireless remotes, and can be pointed anywhere. They can also take a beating I guess, cuz he hasn't had to replace any bulbs or anything. His also have magnetic mounts. The down side is they were $500 a piece. I have not researched them much, but they are definitely nice seeing them in action.
If something like this is too much, you could possibly rig up a magnetic mount for some KC Highlights or something. Or permanent mount them, either way, I would keep them up high, rather than down in, on, or near the bumper. That's just my opinion. Good luck
edit, I gave you an incomplete link: http://www.magnalight.com/pc-1708-35...tic--camo.aspx