I have two active non center shot bows, my JD Berry is 50@26, it is 3/8" outside of center left and right, it likes 45-50 27" bop with 140 heads and 27" bop 50-55 with 160 grain heads. My Sunset Hill is about the same outside of center 55@26 it likes 55-60 with 160 head, 65 with 190 grain heads and 50-55 with 140 grain heads, all 27" bop. My JD Berry Morningstar is 53@26 it likes like the exact same wood arrows as the less center shot duo shooter, with exception it really likes 1918 27" bop with a total of 200 grains of insert and point. The duo shooter will shoot 1818s perfect with 170 combined total, but I stay with wood arrows on that bow. With a Howard Hill Archery bow, if you seem slightly over spined with a B50 string open up the brace height a little, or call Chad Weaver and have him make you a modern material string for it. With a modern string on a Hill bow you do not need to mess with a dynamic spine programs with wood arrows, just go with the graphs like any other bow, but I would not go way over spine or with full length arrows on a Hill bow. Adding a lot of wood in front of the bow can make spine more difficult to predict and with wood arrows of a lot of extra length will make the wood arrows reactions to shooting errors more difficult to predict. If you need more than an inch out in front with a perfect shot to get your arrows to fly smooth, your arrows are too stiff.