I use the full lenght incubator from HG and I have no issues sleeping on my side. I use shockcord with S-biners on all of the d-rings on the UQ so it snuggs around me how ever I lay.
When not sleeping I take the S-biner and clip it on the ridgeline so It's not in the way
I'm a side sleeper. With the help of a Shugvid I found the secondary suspension on my HGIncubator could be very simply adjusted. Works great. Only issue is I like to alternate to the other side and that requires me to re-adjust. I do find myself wishing the UQ was wider so that it covered me both ways.
Usually I just leave it aligned "straight", and it covers me just barely, with the TQ topping it perfectly. But I can feel the shock cords - until 10 seconds passes and I'm snoring. It's not like it disturbs my sleep any or leaves marks on me like a corduroy pillow would.
No reason we couldnt custom-order an extra foot or so of width on that next UQ....