I draw just shy of 28" and my usual setup is with 32" arrows. Small gaps make for easier shooting for me.
But for my selfbows with woodies, I have them at 28" to the back of the point. When I feel the back of the point hit my index finger, I'm clear to let the string go.
I picked up a short 50" recurve last spring. Unfortunately, the 32" shafts, when put in my bow quiver, hang further down than the limb, negating a lot of the benefit of the small recurve for shooting while seated on the ground. So I picked up some older 29" shafts I had lying around and they fly great. Gaps went from about 8" at 20 yards to about 20". But with some practice, I'm making the adjustment.