On the capping/crowing of the shafts, I spray paint, then using a big oil funnel I dip the shafts (after cresting ) in Minwax's polyacrylic. Then I dip them in after the polacrylic has dried in gasket laquer. It works quite well.

I refinished a bow using Formby's refinisher and Formby's Tung oil. Worked fine, but I will try true oil next time. I don't know that I'd use the polyacrylic on the wood or not - true oil and tung oil is the choice of people who have tried everything.