A long time ago, I saw Ken Beck from black widow shooting bare shafts at great distances. Since then, I tune my arrows in this matter. I usually shoot and tune my arrows with the bow held vertical. Recently, I started shooting a Robertson Wolfer that has a natural cant to it. I found out that there are different spine requirements between vertical and canted bow in regards to the Wolfer. In order to do this, you must have a consistent anchor. Instead of my normal nose to feather anchor , I glued a half round button to my cavalier tab which I contact to my orbital cheek bone. After making some length adjustments, I could shoot the bare shaft 30 yards with no nock left or right. I then took the shaft , fletched it and mounted a Stos head. My arrows are almost full length but the broadhead flight is excellent.
For those who bare shaft tune, has the degree of cant affected spine requirements a great deal.
Cant is just one of many factors involved in dynamic spine but I will argue that the most important factor of all is still repeatable form...it is also my contention that many animals have been killed by arrows with less than perfect tune and far more animals have been lost due to form errors...I spend most of my efforts working on form
DDave
If your draw length is affected by canting the bow? you have shooting form issues.