I had a Corbin seat, on a RF900-S2, and it was much harder than the low Uly one is. For less than a Corbin seat you could sort your own rear shock or buy a Hagon, etc. The Showa suspension and the low seat on the Uly are great though and hard to beat IMO.
You could try the free option and this is not taking the piss.
Learn to control the bike so that you only need to put a foot down if you are at a stop. Like the Police bikers do.
Find a big empty carpark. Practice slow speed control by reving the engine a little, slipping the clutch and use the rear brake to balance the bike. You might need better rear pads as the OEM ones are crap and have no feel to them. If you need to put a foot down just slide off the seat enough to do it.
If that does not work just sort the shock or buy a more suitable bike. The design of the Uly is what it is for a reason
Good luck, Dude.