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Too few people , IMO, consider adjusting bow weight to get arrows to tune. They seem to be superglued to a particular bow weight for some inexplicable reason. Half a pound here or there makes a big difference to how the arrows will tune.
As Marcus said, it doesn't need to take long to get a tune which is "good enough" for a large percentage of archers.
I can't comment on "top archers" tuning methods as I've never seen any of them do it in reality, although the fine-tune methods explained by Rick McKinney and Jay Barrs were pretty extensive and would take the best part of a day - whether they used these methods themselves, I couldn't say.
Personally, I set the sight vertically above the shaft, shoot bareshaft at up to 30m, bring the brasehaft in with a combination of bow weight and button (I don't like the button too stiff or too weak, hence the need to use adjust bow weight). If the shaft still isn't in the middle, there's something wrong with the spine selection.
Finally, I then check my windage is right for 30/50/70/90 then (if I'm shooting well enough) group tune at 70.
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