Pace
you will in all circumstances fly the published procedure regardless in a non controlled airfield ?
Given that the OP states the published information says
under no circumstances are overhead / deadside joins allowed
I do not think joining R Downwind, with a L Hand Circuit in Force, is
either safe or legal.
A pilot may vary a published approach - that is their decision and hence
added responsibility: So they should know where any other aircraft are
and what they are doing; and ensure that other aircraft are aware of
where they are and their intentions.
Therefore it must be certain that there are no non-radio aircraft operating
near the airfield.
To me the above means you can elect, for example, a Base or Final join,
rather than a published Overhead join.
It doe not mean it is legal to join R Base when a L Hand Circuit is in force
and, in my opinion this would be highly dangerous: Aircraft Head On are
the most difficult to see and on Base a pilot will be checking Final (in
case they need to give way to traffic on a Straight In) and the Runway
in order to judge their own turn on to Final.
Even in this deserted sky you will add to time cost and pax comfort in
Unneeded turns ! Amazing!!!
An airfield is likely to be the busiest part of even a "deserted sky"
The OP was not a Pax. He was
paying to be Checked Out.
(Am assuming the Instructor was not doing it for love)
He also states this was his first flight at this airfield (and indeed in the UK)
The OP was not happy with the join suggested by his Instructor; so much
so, he says, that he refused to fly it.
So:
Deadside Join suggested that was absolutely contrary to published procedures
(and possibly dangerous given "parachuting was taking place")
R Hand Circuit flown when L Hand Circuit in force.
Above suggests poor airmanship to me.
In this case it appears that the Instructor demonstrated (with no
explanations or caveats) that it is perfectly OK to ignore the
published local procedures if one wishes.
Above suggests poor instruction to me - and not the Check Out that
was being paid for.