You're right Brett, that's exactly the issue we are dealing with. With an awning that has the arms attached, you can only oen the door 90-degrees.
However there is a 'good' solution I have seen...evidently ZipDee used to make an arm that detaches from the trailer at the bottom and swings out into a vertical position. The bottom then would be staked into the ground...pretty cool, however, those aren't available new anymore
The person that told me this is a ZipDee dealer who ia a trusted member of the WBCCI DenCO Unit.
I have seen the brackets on his trailer and a couple of others...but have not really researched them...since deciding to go the vintage looking pole & stake route. Maybe this GT has something similar, can't tell.
Shari