Re: So now flying a kite...
Out here where I reside, the major international airport has this problem all the time:
NOTAM (Notice to Airman):
CTN ADZ DUE TO MANY KITES IN VICINITY OF AD. ALL ACFT AFTER TKOF TO
MAINTAIN RWY HEADING UNTIL PASSING
3000FT OR AS INSTRUCTED BY ATC
SFC UP TO 3000
Kites are endemic here, and the authorities won't chase them out of the skies as the narrow streets around the airport are too hard to navigate through (this is Indonesia).
I'd suspect the FAA and airport authorities in the US would hold a dim view to this kind of activity.