I' d think they' d get a more accurate age determination by how much wax biuldup was in the ear canals!!!
On a serious note I highly doubt this would work, especially up here in the northern parts of the US. Deer up here have thicker hides. You rarely see any small creases in hide from muscle tissue. I do taxidermy, and have mounted some N. Carolina deer. I can' t believe the difference in the thinness of hide, and hair compared to NY.