Well, then I'm old-skool allright.
I've ridden a few "short" endurance races, 2 & 4 hours, and one 6-hour, all in daylight. But I've worked the corners (safety crew) in the 24 Hours at Nelson Ledges a few times, and helped out a few pit crews. The lights they used to run were pretty outrageous sometimes... big off-road lights mounted on the side of the frames so when the bike was at extreme lean angle, the lights pointed right into the curves. Of course, going down the straights the light-beams would shine up in the air at crazy angles, lighting up tree tops going by at 150 mph+... a weird and surreal scene indeed.