^
The 'blood tracker' ones are 'meh' at best. If there is a good bleed, then they do ok, but if the animal is lung shot and expiring a mist (as they often do), then a plain white light and a paper towel work 100x better.

I agree 100% on the hands free lights. I have some regular ones, but 90+% of the time, I just use a cap light:

http://www.cabelas.ca/index.cfm?page...=2005&ID=40412

A buddy's company is looking to market these:
http://www.cabelas.com/product/Cloth...3Bcat103957380
and when he does I'll probably pick one up for hunting season