As to your design, either a diagram or a picture would be appreciated. For mine, I attached a balloon (clothes pinned shut), to a wide coupler that house several 1/2 inch stefans... It later broke, after being stepped on.
I had a similar idea. And just for your information, a little decency and kindness goes a long way to making people here like you. As ashamed as I am to admit it, I only read the CoC once, yesterday. I simply subscribed to the idea that if you aren't an ass, and if you type so people can understand you, you can get by pretty easy. Oh, and searching helps.