I think a lot more folks should try putting a simple sight on their bow, single or multiple.
Jimmy shows how little the trajectory changes here with a faster arrow and single mark, but with slower arrows you can learn to gap it like a set crawl too.
We play with shelf and elevated rests, out of tune nock heights, heavy and light arrows, so why not a mark or pin to practice with, create confidence, or make better hits.
I always keep a couple of old Cobras on the archery shelf to play with, can also help when planing tuning bareshafts and fletched.