There's a couple of car parks round here that have been marked out with the riding test course, just for that purpose on w'ends. Local gov't being both thoughtful and clever; rare indeed. Designed of course for learner sized bikes so it's bloody hard on a Rocket and the U-turn is impossible - even walking it round on full lock takes me a metre too wide. It has weaving, turning, braking tests all there and an excellent way to get better at the really hard stuff. I go along and 'support" Amanda by showing her how hard it is even for someone who's been riding for 40years.
As an aside, sadly she dropped her brand new America the other day (no damage to either - small scratch on one indicator - phew) when a car spooked her as she was leaving our driveway. She now knows not to grab the front brake when she's hardly moving and the bars are turned.