I'll say..If broadheads come in sets of 3..include 3 sets of practice blades not 1.

If a company sells an 1 pin sight that is adjustable for a variety of ranges ( such as the HHA Optimizer)

They should have on thier website a program that lets you input your arrow weight, draw-length, poundage..etc and spit out a a printable yardage indicator that you can affix to the site!This way,you don't have to draw lines on your site which makes your set-up look cheesy.

Even if you had to get one yardage yourself, the others have to be a relationship..of the above factors.