I changed mine out last year, traditional dometic awning, rivets, visegrips, etc... It's not as bad as it sounds, quite a simple process actually.. I used a Carefree vinyl awning fabric as replacement.
two people required..
Here's a vote for CO2 tank.. I use it all the time to inflate by airbags, truck tires and 5er pin AirRide bags to 100 psi..
I also use it at home to power air tools, etc.. best part is, it's completely silent and quick.