Hello Lads,
I have used the new concept system as a basis for 3 of my builds on rods that are primarily for casting. I know they have charts for this, and I know of the 27x spool diameter rule, but I determined a choker point by putting a reel on the reel seat, and using the spool axis to determine the choker point. From there it is a mix of trigonometry, static loading, test casting, and rechecking. Each of these 3 rods are built with a specific reel in mind, and hence, the choking guide is laid out for each reel.
From my point of view, the fundamentals of the NCG are a great way to get a starting point of setting out your guides. I am not saying it is the best way, or the only way, just another way of getting to your desired outcome.
And yes, I am very impressed with how they cast.
Cheers,
Ben