Skitch:
Don't think filling them with foam would work, but a good idea though. The PVC pipe would have to be held solid in one place when filling them. That pipe had to stand vertical to slip over the mounting stake. That is the problem when the screw came out. The pipe moves around and the decoy will not stand straight, or hold air. Going to give it another try, since I have not heard back from the company. I like the decoy and it works well, but considering the customer service, I would check out other brands now.