Very cool of you to post, thanks!
I think I will mental-note your breakdown above, so when he tells me to 'suit myself' I think 'last week was driver, back to the short irons for a while' and keep myself in check like that.
I am 90 percent sure if I tried to 'step change' on the upper deck at my driving range, then I will plummet to my death. No faith in my coordination at all! Will poke around that site, thanks again.