I'd say the 99% figure is closer than you think[8D]

Numbers of Bowhunters in steep mountain terrain, compared to those in normal rolling hill or flat land terrain.

Then even if you do Bowhunt in Steep terrain it won't matter every shot. Far from it

How many resident & NonresidentArchers in AK? How many resident & Non resident archers in PA? IL? MI? WI? etc., etc.

For the OP. Nope you don't need it, but if you are buying new then why not. It definitely won't hurt!

Dan