Not the cheapest solution, but definitely the strongest and could be taken on & off fairly quick with a 10mm ratchet. *Depending on skill-set using hand-tools
I strongly advise unless you intend to mount it & only use in a "stationary" scenario? (ie. not driving with it mounted) Use something that is strong. The amount of force your awning experiences at 65-80 mph is tremendous. Ask me how I know? I had a grade 8 bolt shear off while driving home from the mountains, leaving my awning hanging off the side of my truck on the 405 :fear:
Check this product out, you'll thank me later:
https://bomberproducts.com/products/awn-lock (or, have a fabricator attempt to replicate for less)
The awning is literally a big sail on the side of your truck while driving. The longer the awning, the bigger the area wind will use as leverage to "rip off". Avoid anything quick-fist - rubber is definitely going to get someone killed if that thing flys off while you are commuting.