BamaSixGun
SDD Super Mod/Staff
It sounds like a good theory to me. LOL. Does the opening have to be as large as you made yours? I was thinking of just using a single downspout rather than piecing 2 together (if you don't mind me copying your idea, of course).
I had already done the drilling and after a few years I got tired of just having a big hole. So I dreamed up this idea on how to "dress" it up a bit. I had to use two down spouts to cover the hole I already had.
Feel free to copy away. HERE is a sticky thread about all things Zoodad. You can get some other good ideas and versions of how other members have done theirs.