Yes it does. Three under I have a point on of 42 yards. Split its well over 50.
The farther below your eye the arrow is, the further your point on will be. It's the reason Olympic archers anchor under the chin. If they anchored in the corner of their mouth the arrow point would be above the...
One easy way to test this would be to go to 40 yards. Get your current sight picture and determine where your arrow point is (bottom of the bale, rock, put a pushpin in the target etc). Then tape a 2" long stick to the end of your arrow. Draw back again and put the arrow tip on the pin,rock...
It depends how low your anchor point is. The lower your anchor point, the more arrow length affects your point on distance.
That being said, cutting 20 yards seems like alot with just arrow length alone. Unless you anchor super low.
It can. Shooting off a rest is a little more forgiving of bow arm movements. Additionally if you shoot a springy or rest with a plunger they can be a bit more forgiving with arrow spine.