We offer "Mass Guidance" as the IAM calls it but it is 1-2-1 with an observer on the day. Each associate is allocated a NO as a mentor. The Mentors role is to check all the ride reports ( we submit them electronically as no one could read my writing
) and talk to the associates assigned to them, make sure everything is going well, discuss any issues. The associate gets a different observer for each training module. This way we avoid any potential for a riding clone, a different observer may explain something in a way the associate er understands better. To some extent the examiner becomes just another observer.
All associates have the contact details of the committee and are told they are free to contact any of them if they wish too, and we all try to attend the monthly social evenings.
We have a few examiners so we don't coach to a particular examiners quirks, and our modules are based around the system, not road features.
Every month we send an email to all the associates on the course asking them to confirm their availability for the scheduled ride dates, ( we do have some that cant make them as working so we make arraignments to cover that) based on the response we allocate the Observers and a week before the ride the observers get the electronic reports for the associates previous rides. The first thee course modules the associates are given set routes in advance so they can practice the route that way they are giving their attention to the ride not fretting to see if they have missed the observer turn signal.
The admin is probably a little more than some groups but for us this works.