what i like to do is use scent bombs in three diff. colors and set them at 15,,30. another thing you could try depending on your bow sight your pins in diff. like say you are shooting 275fps 15yd pin is good at 5-22 yds give or take an inch which is fine for hunting remember a deer kill is bigger than a grapefruit. but i use a rangefinder now

Measure out a length of twine that's a few yards longer than your maximum distance. Tie off little markers on it - i.e., 15, 20, 25 yards - and then use it to measure off distances in your shooting lane(s). This way you'll know approximately/very closely to what the distances are. And you can keep the twine rolled up in your gear bag and bring it with you easily anywhere you go.

good topic glad that you post because i'm not buying one either and i'm learning alot of stuff.

To hell with that. I'm getting a range finder! LOL

Yeah I said to hell with that and got a rangefinder a couple years ago. Now when I get up in my tree I just lazer a couple of trees around me to I have an idea if a deer comes.