"It can take a couple of years, or it can take a couple of days," Grainger says of the learning curve. "It all depends on the person."
The club's safety regulations include stuff like "preflight inspection" of the aircraft, right and left turns, "slow speed stalls" and "rudder only turns."
It seems unlikely that many of the people buying drones on the Internet are bothering with that sort of training.
Hansen says sales of unmanned aircraft "are growing almost exponentially." He says his organization is hoping to work with the feds and drone manufacturers to include "safety protocols" as part of any sale package for unmanned aircraft.
Another concern, Hansen warns, is that a lot of the fragile little drone things being sold on websites "are not really what you'd call 'airworthy.'"
As Hanson points out, "You don't want to be flying these things over or around people in case something goes wrong."