[Greg McKaskle]

It sounds like you are well prepared. Bringing equipment to adjust to the field was exactly what I was suggesting. The lighting at the events can be any combination of the bulbs you listed, and can also include diffused or direct sunlight. I haven't attended a district event, but have seen huge variability from regional to regional.

The major benefit of the retro-reflective material is that it lets teams provide their own source light. They can use color/frequency, pulses, etc. I haven't tried polarized light with the model of tape that is being used. Does it depolarize or not?

I'd be curious to see images or video from the actual event.

Greg McKaskle