Hi WD
Because I am stuck at home (long story) my experience with the Moment so far has been fiddling with it in my backyard and my bedroom.
Right now my Moment is in Vancouver ready to go on a sea kayaking trip with my mate Yair and Toui (Remy the rat...)



I found out that if you angle the ends a bit more downwards as per this drawing


rather than as they appear on many pics, it works better.
Failing that , since there is a Velcro strip there, I would make a little stick about 2-3" long with Velcro cups and put that in there to keep it open.

This one is a piece of cardboard wrapped in clear tape (waterproofing...) and with a strip of gaffa tape reversed at each end.
Made that for another tent.

Franco