Seabreeze SUPpers!

I recently bought a Race SUP, and need a simple solution for hanging my SUPs in the carport.
I live in a rental, and they're not too keen on putting screws in the breezeblocks.
So far my solution has been to use some ratchet straps through the breezeblocks and my soft roof racks.



Ideally I'd like a solution where:
-I can have some U-shaped wall racks that will still keep the board fairly close to the wall so I can still get into my apartment on the other side of the carport.
-makes it quick and easy to grab my board and head to the water
-some racks that don't need to be bolted to the wall

Any creative inspiring ideas out there watermen & women? Look forward to hearing from you!