Are the holes strategically placed, or can they be anywhere? Does a persons height matter?
People vary greatly in height and width but that is not a factor in the location of the holes. The distance from a persons SHOULDER to the TOP OF THE HEAD is the critical factor and that does not vary significantly. Four years of testing has illustrated that 4″ by 20″ slots located in the center and 19.5″ from the head and foot are ideal.