The tens of thousands billed for a frivolous rescue request probably will stop the casual pranksters too, getting a helicopter out to wherever you're stuck isn't a free service. If you're really out in remote places often, you probably know this well enough to get rescue insurance.

Actually it depends. In Canada, many rescue services are free (North Shore Vancouver is a well known one here) as well as in the National Parks (the cost is essentially insurance paid for by the park pass fee) and many provincial parks.

There is an argument that pay for rescue causes people to hesitate to call and that can lead to worse outcomes and/or more dangerous rescue scenarios.

There is also an argument that free rescues lead to reckless behavior and worse outcomes, because if the worst happens you can always get a chopper to pick you up….

In my state, the bill will be in the five or six figures -- but if you were legitimately in real danger, they will usually opt not to charge you. If you called them by mistake or as a prank, you'll pay.

And rescue insurance would not cover pranks either by the way. So be careful :)