There's no need to broad head tune the bow if the bow is tuned properly. Not all broad heads fly like field points, that's impossible, the design of a broad head is not as aerodynamic as a FP, I know some will argue that, but your free to express your opinion, even though you're wrong.

It doesn't take long to adjust your pins to BH's adjusting and tuning are two complete different animals. When I could only afford one bow (a million years ago) I only shot BH until the season was over. I have compounds and trad bows that are each used for a specific purpose and they are all fined to it's intended use.