Well, Mike, I don't agree with your figures, but that is okay. For the first NATCH, one needs 23 Regular, 13 Jumpers, and 13 Chances and for the second and further NATCHes require 20 Regular, 10 Jumpers and 10 Chances. If you are referring to a first NATCH and doing one day trialing with double runs, then you must attend 7 one day trials that offer Chances and 7 one day trials that offer Jumpers in order to earn that first NATCH. That is, if everything is perfect and you have one Q left over for the next NATCH.
If you are on your 2nd or subsequent NATCH, then it would take 5 one day trials with Chances and 5 one day trials with Jumpers in the "perfect" qualifying world. So it would take 14 one day trials for the first NATCH and 10 one day trials for the subsequent NATCHes.
On two days trials it would take 7 two days trials, just like it would take 14 one day trials for the first NATCH. For the subsequent NATCHes it would take 5 two day trials or 10 one day trials.
The bottom line is that this is personal.............. the figures that you give are the expenses for YOU when you choose between 1 day or 2 day trials. Many, many others can give a spreadsheet where a two day format is WAY cheaper than single one day trials. So the "cost" is strictly a personal choice on where you live, how far it is to a trial and your personal expenses for traveling to a trial.
Every individual has their own personal and financial choices.
You might want to go back to older posts and read about the reaction of "double" runs in the US. We still do it at funraisers and we still occasionally get flack from it........... in Australia they don't know "other" formats, so they are open minded and accept the formats.
When there are the double runs in Australia, the same course is run twice. At the Funraisers, the same course is run twice. But the majority of competitors in the US want the "known" format and not anything "new" and there was a lot of posts and conversations about how good or how horrible that format is. For the Australians they didn't have the 20 years of the same format and then be offered something different......... change or anything new is difficult. In Australia, NADAC is still quite new, so changing the format to double runs works.... less course changes, less walk-throughs, faster trials. But in Australia, Shirlene and Wendy are doing the vast majority of the work..... loading and hauling the equipment to every trial, setting up the ring, running the trial and tearing down and hauling everything back. So a few less course builds and a few less walk-throughs make a huge difference in the work load.
The "costs" are different for every person and you gave your costs, but that also changes for every competitor. On either format, it takes the same number of trial days. And of course, we have been talking about a 100% qualifying team. That is not likely......... and that starts to change everything, depending on what Q's are needed if one's goal is it earn a NATCH. You could get down to just needing a Jumpers and if the double Jumpers don't fall into the days that are available for you to take off for that trial day, it could get pretty frustrating.
Everyone has different goals, different finances, and different perspectives.
But NADAC is NADAC, whether it is the USA, Canada or Australia. It takes the same Q's and the same number of opportunities to earn the exact same titles and awards.
Sharon