takin the easy way out eh?
How about some field experience?

edit:
we in Europe, furriners to you, are not allowed to run those noisy contraptions due to very strict noise regulations. In order to help you out, I depend on data you collect, and publish.
I hope you understand, that your field is next in line to be shut down if you care a hoot about your fellowmen.
This globe is getting more crowded every day. We need power to fly, and we need to do that as silently as we can, or others may object big time to what we do. They will probably outnumber us by a large ratio.
So let's share knowledge while we can and make the best of it.