You'd be surprised at how good the 1250GSA is at slow manoeuvring. I've been riding for 50 years this year, this is the easiest bike I've ridden for this. The low hight setting is only good to reassure you if you did need it. But, it's easy to do without putting your feet down at all, as long as you remember just look at where you want to go.
When I was doing my advanced, my observer encouraged me to find a disused car park and practice before every ride (and test). 3-4mph U turning from 1 bay to another at full lock became easy after a short time.
Previously, before doing advanced, I'd rarely used the rear brake at all, for anything

. The use of rear brake and the balance of the bike was the key I think. Made me look better than I thought I was.
In contrast, I have a Harley Breakout that is really low, I can't do the same on that as what I can on the GSA.