The way I see it is at the present time there is only a advisory to not exceed 400ft, I think however if your site is within 3mi of a airport your site should
let the airport know they are there however I dont think the airport has any authority to control your club in any way.

I think the most importaint thing is to use common sense and to avoid conflict with full scale operations because if the FAA gets involved it could lead
to the club being shut down.