when i was younger i did 16 hours of community service at a green house for possession (not on record, but i guess it is, now)... lol..
anyway, i was told not to prune every node, but skip one then cut. so basically 2 nodes between cuts. not sure if that applies to marijuana, though. I'm sure it can handle it but maybe not optimal. 1 node - 2 nodes - safe to cut.
i don't know if it matters, but anecdotally i think a little beginning growth of auxiliary buds before i top that branch tends to help too. as opposed to the tiniest nubs in nooks -- more so about anything below, the 1-2 at top are typically still quite small when i do it. i'll take more than 1 node off top occasionally too.