Once you get your bow tuned and your form down, a bare shaft will fly as good as a fletched arrow.
I practice with only two arrows, one fletched and one bare shaft. I shoot out to 50 yards with the fletched and 20 to 30 yards with the bare shaft. If my shots are not dead nuts, I think about what I did wrong as I walk up to get my arrows.
The bare shaft will tell you when anything is wrong with any part of your shooting or bow. It will also tell you as soon as you begin to tire and your form sags. When you tire, stop shooting!
My advice, use your bare shaft as you practice and don't use more than two arrows. It will keep your form tuned. Remember, it's not how many arrows you shoot but haw many you shoot correctly. The longer you shoot with a form problem, the harder it will be to correct that problem.