You will find with almost all moving mirror fixtures, that hanging them upside down will give you the best play. if you want to do sweep
ups and scans. Unless you have them at a higher elevation and really onmy need them to sweep a stage. I have hung them every wich way.
The best answer is first plan where you want your mirrors to positon to. Then hang the fixture in the best
practical way. It's just like aiming a conventional, point and shoot, except this time you have some play where the beam goes.