Low flying? unless you are intending to land? If I am over Oxford or Banbury in a glider, I certainly do maintain better than 600 feet, and the good news is these towns do generate lift. However, gliders are seldom noticed.
We don't make irritating noises.
Are there any rules on low flying that apply to helicopters over my house in Oxford? I wish there were! Also, a small plane comes over my garden nearly every day, no doubt with a tourist on board, and performs a mild series of stunts. Annoying noise again.