Random thoughts.
If one has a normal uni with same wheel size as giraffe, ride it to “feel” wheel inches for reference.
Riding a larger wheel mostly, then tall with smaller wheel will feel very different.
Do not free mount until very comfortable riding, same for idle!
A very best case learning set up would be 1 better 2 tight ropes, slack lines mounted comfortable high enough once seated on tall uni.
Years ago in a gym a very skilled young rider wanted to try my tall, 6 foot uni.
He was afraid so I thought about the cheat ropes on either side.
It did take a few tries to get slack lines mounted both in height and width.
Then using 2x4 wood block as wheel stop.
He used this to gain confidence being higher
Off the ground.
Did not even need a half hour until could ride unassisted!
This idea was seen and used by many others in the juggle club both for tall and normal uni learning!
I will suggest to once ok riding, do many forward AND rear intensional dismounts just to be ready for U P D, falls!
Try to catch uni to help damage control.
Imho tall uni riding is just a matter of concentration and getting over the fear of falling. I like others do find more time to balance on a tall.
I find having the seat a touch lower can help the getting on the seat and tilted so rear
Is lower.
Pay attention to chain tension ,tire pressure.
Choose nice level clean surface ,gym, tennis court, ect to build skill removing surface variables.
oww