Thanks for the comments so far.
Huey Racer...no good finding another pilot.He can't become an examiner without another examiner to train him.Catch 22!
Hiller bee....interesting,which country is this? Obviously not the UK!
Mister bonkers...it's not an annex 2 type and not flown for hire or reward by any of the current users so far as I know.
Nigelh...not sure N register will help as assume pilots would have to get an FAA licence but an idea.
Wonder if new LAPL is an easier route....does that also require regular examiner checks,and how do single seat aircraft pilots keep qualified?