Someone had asked me a while back, how I put my quarter sheet on.
This way seems to work really well for me, and it doesn’t move - however, I only flat with a quarter sheet.
I put the pads on, set the QS on my horses butt - front folded back, put my saddle on, then secure the front velcro tab. I put the side pieces between the leg flaps, but under the girth billets. Doesn’t seem to get into the way when tightening the girth and it stays in place 👍