Most river cane shafts don't need inserts unless they have a big hole inside. You can whittle a small insert to fit if you need to. I often use pieces of bamboo skewers in the point ends if I want to taper them for field points. For the nocks, I just cut them and wrap in front of the nock with sinew. If you're talking about a foreshaft, I don't use them or care much for them, just a weak link and a pain in the butt to get balanced. If you're going to add a foreshaft, you will have to drill the front of the shaft out at a taper and match the taper on the foreshaft to fit it. The Knox will work fine for hafting, but it won't be waterproof. You can cover it with a thin layer of pitch to waterproof it. For actually setting the points in, I prefer a pitch/charcoal/beeswax mixture. You can fill the hafting notch with the pitch, heat the point, and it will seat firmly in the slot so you can spin-test it. If it wobbles, just heat it back up a little and adjust the point.
