As far as when you're rolling the proper technique is actually cross your arms around your chest. This way if the steering wheel jerks back and forth you don't break your wrists/fingers. I made this mistake when I was driving a UTV two years ago and the steering wheel really messed up my hands... Couldn't drive the rest of the day and let me tell you, my hands hurt like hell... Nothing broken/sprained but very very sore (and I was only doing 10mph tops). You can always get some
arm straps to prevent this kind of thing from ever happening.
Glad to hear everybody is OK!
I would suggest getting some cheap incandescent lights and swapping in some
LED chips and a small block of aluminum to act as a heatsink. Those things are SUPER bright (even without a lens). Additionally you could take a small aluminum bar and make a light bar with those chips.
As far as buying premade goes I would dig around on eBay... For the most part LED's are LED's and as long as you buy from a highly rated US seller you'll be fine
