Dr E,
I have no argument with what any of this, but most are suggesting you get more than one hold - you may and I would suggest a fair and decent examiner would want to see each hold get better, but I have had IR candidates who are given only one hold and not surprisingly they failed that part of the test.
When I spoke with the IRE afterwards he advised me that one hold is all they have to see - so get it right first time is what he was suggesting.