I'm not trying to argue with you guys.....but I don't see it as even getting the most out of your setup (or maximizing your bow's "efficiency"). I see it as getting true arrow flight out of your DESIRED setup.

I may choose a severely overspined arrow to achieve more arrow weight/KE/momentum. While likely not "optimal" for the bow's performance......it's "optimal" for my desired effect.

Tuning, to me, is achieving a desired effect.

If that's splitting hairs, I apologize.