Well, all I have to say is GO BUCKS BAGS!
I ordered oarlocks, grips and rubber stops (just like yours Frank) on Saturday - site said 3 to 5 business days shipping (cause I'm cheap).
They were here when I got home today - now that to me is pretty fast shipping!.
Checked yesterday and the frame is indeed aluminum.
The outer casing on the pontoon feels like a PVC football - really thick stuff doubt it will tear easily.
Like I said before, the toon is in great shape, zippers all work, straps show no wear, toons hold air without pressure drop - 3 days now no decrease in pressure.
I put a rope around the thickest part of the toon and then measured it - 56 inches around. huge puppies!
Now I just gotta get her in the water!