Hangfire - don't worry you didn't rain on my philosophical parade.
What I think is truly great about this sport and indeed this forum is the willingness of most of the top shooters to share their information. Just look up the NRAA rankings list and a lot of the top contibutors are the top ranked shooters. Rod, Alan and Cameron leading by example.
I propose that this may be a "chicken or egg" thing. Is it the willingness of these guys to share that got them to the top? Or did they get to the top before and then start sharing - I think it is obvious. It may have all been done at club level to start but I bet everyone of them was a "giver".
Particularly in F open where there is arguably a lot more mumbo jumbo to wade through.
But in an effort to get this back on track - with regards twists and nodes - if you also look at the top 5 ranked shooters at least - notice a pattern?? - they are all shooting 7mm 8.5-9 twist at around 2800-2840 fps.
No doubt their are some other combinations working well but the above recipe is a tried and proven one.