...i do leave the node on sometimes and cut above it on the nock end...ONLY when there is enough suitable boo there to form a good nock.
sometimes when i get bamboo the shaft gets real thin at the nock end and the growth beyond the last node at the nock end of the shaft gets too thin and oblong.
even when i leave the node on, i still wrap it.
i personally like leaving the node on when i can as it leaves a nice bulbous place to pull the arrow back on the bowstring.
...this is just ONE way of hundreds to make nocks, i was just showing a simple method of doing so.
not all my arrows look the same, it would be nice! but each one has its own flight personality and some need a heavier tip to fly well or more feather ,less feather,longer,shorter etc.
as long as they seem to fly where i want them to fly i guess thats ok with me