I have a male boa over five feet now and he out grew his hides. The problem is, I cannot find any that are bigger, anywhere. So I went and got a plastic severing/mixing bowl (the darkest the had was purple) and I cut a hole into it. I know it would fit him but he wont use them. Is this okay? He doesn't seem anymore aggressive then usual. He isn't the nicest boa, he likes to attack us through the glass even when he had a hide.