Hmm. Not sure if I like the phrase "older drivers", you young whippersnapper. Maybe "vastly experienced" or "highly proficient" would be more in keeping with the level of respect you surely have for your elders!
The intensive course you mention is exactly how I learned to drive. On the road at 8.00am, then drive all day until sunset - which, as it was summer meant that I was doing 12-14 hours a day for two weeks (not weekends). It certainly was a great way to see most of northern England and the instructor knew every steep hill, winding lane and awkward parking area along the way.
Final comment. I want a motorbike again.
Nothing huge, I nice little 250 would be good. I want to wear-out the edges of my boots on the road surface again! Miss that.