R and C,
I have been considering exactly that when contemplating the repair of mine. None of my other MH units had anything like the Alpine and I'm considering another method to accomplish keeping the door in the open position without chancing the event of a lockout. Bungee-Cords or "cheap plastic thingies" aren't part of the equation.
Perhaps I'll install 2 small Marine-grade stainless steel hooks on the outside of the door and Coach. A Stainless rod, similar to the awning pull, could be made to drop into the "Eyes", maintaining the door in the open position.
The only thing I know for certain right now is that I'll tolerate the chance of the door closing before I chance it locking me outside.
Regardless, I won't remove the top scissor mechanism because I don't want the door to get pushed or blown open beyond the 90 degrees, which could cause damage to the hinges or Coach.
Bob (Squidly Down Under) & Peg - 2013 Ford Focus pushing a 2011 Phoenix Cruiser 2552S
"In God we trust" to preserve our country and bring our Troops safely home.
Carry on, regardless..................