getting front wheel to rotate on centre stand ?

[Kinggy]

I've got a 50mm jack up kit on my fazer, So when it's on the center stand both wheels sit on the floor and i can't budge the bike either way. But when I needed to see if the rotation was okay for M.O.T I just put the bike on a little bit of a hill facing upwards and got somebody to push down on the back so the front would raise up.