eHarding and 3Ys
Yes, all gracefully accepted.
All of your comments are clearly appropriate to formation flying.
My point was that the debate seemed to have moved on to flying in well spaced company. I think it should be clear which we are talking about (and I do agree the poster started out by talking about "formation")
Given what the poster appears to be seaking to achieve and given the mix of aircraft I would have thought well spaced formation would be far better suited to his purpose anyway - leaving aside whether or not the nav equipment on one or other of the aircraft is up to the job.