The debate about helmet testing has been ongoing since I can remember. I did some research for a school project in the 80's and find something similar and just came to the conclusion you gotta wear something. For all the supporters of not wearing a helmet I think you can do what ya want but I think first your head should run thru the DOT or SNELL testing. Was that a 10 foot drop on the head? I always use SNELL approved, then again most race organizations require it. WTHB