Not meaning any disrespect, but the hide test along with the whole host of others has not proved a thing. No one has been able to come up with a test material that will replicate a live animal. Hair, living tissue, blood, bone etc. all come into play. We are talking NJ whitetails here, not the biggest deer on the planet. A 45 pound bow with a properly tuned arrow, and a sharp thunderhead put in the right place will take deer all season long. To be honest, in the past four seasons I have not seen much of a difference between thunderheads and woodsmens(I use both). Both heads make a big hole, both come out the other side of the animal and both get buried in the dirt. Thunderheads are 40 bucks for 6 and the older glue on woodsmens are a tad cheaper if you shop around. JMHO