The Bend Park & Recreation District is considering rules for drones in its parks. Instead of trying to make parks a no-buzz zone, the district may allow them.

New rules may permit drones “to the extent that they do not endanger the comfort, health, peace, or safety of others or cause harm to District property.” The district may also add other prohibitions and guidelines in the future.

Those rules could be reasonable. But good luck enforcing them.

When does a drone make someone uncomfortable or disturb a park-goer’s peace? When is it safe to fly a drone over a person or a group? How close can a drone get to power lines before it’s not safe?

The welcome thing about rules is that most people make an attempt to obey them. And most drone owners don’t want to disturb or endanger other people in parks.

But think about the other rule that is difficult for the district to enforce: dogs on leash. At least, that rule is clear. A dog is either on leash or off leash. Enforcing “comfort” and “peace” in a drone regulation is — you could say — up in the air.

Drones also crash. Sometimes it’s through no fault of the pilot. Batteries run out and equipment fails. Drones have crashed into people and caused injuries. They have crashed into cars. They have crashed into power lines.

Drones are generally legal to fly in Oregon as long as they aren’t weaponized, stay below 400 feet and don’t intentionally or recklessly harass owners of private property. They also are not supposed to interfere with aircraft. It’s encouraging to know that Gary Judd, airport manager at the Bend Municipal Airport, says the Bend airport has not experienced any issues with drones.

The park district is in the fun and fitness business. Drones are fun to fly and take beautiful, creative images. The district, though, needs to explain to the public how it will enforce any drone rules.