I subscribe to Stephen Regenold's The Gear Junkie, a daily and weekly blog e-news devoted to new outdoors gear (though I'm yet to win the weekly give away!). Regenold recently posted a Q&A article detailing a mountaineering incident in early June in which a PLB was employed. One of the involved climbers, Bill Becher, a writer from southern California, had the ACR MicroFix PLB unit in his pack, though he never expected to use it. But while descending from Mt. Gilbert near Bishop, Calif., in the Sierra Nevada mountains, Becher’s friend and climbing partner fell and broke his leg. They were several miles from civilization with no good options.
An interesting lesson learned from the incident, which can neatly be related back to kayaking, is that the PLB isn’t that precise and you need some way to signal rescuers. Becher says that the helicopter had difficulty spotting them until they saw him waving his red parka.
So don't forget to carry that signal mirror and some flares with you!