I've owned and sailed boats for over 30 years. In that time, I have never had to fire a flare, nor have I ever observed a flare being fired by another boater in distress. In that time, I've bought and collected a lot of flares that have long since passed their expiration date. Once in a while, I've had infrequent opportunity to fire expired flares at marina events approved by the USCG to familiarize people with the proper method for undertaking this task. Three out of four expried flares illuminated perfectly. Yet I hope that none of us ever have to fire a flare in distress as that is not the time to learn how to do this safely. So, I've decided not to buy new flares when my current ones expire unless I am planning for an offshore cruise. If I am ever boarded and inspected by the USCG, I plan to trot out my 3x3 daylight distress flag and the electronic SOS signalling device that I believe will meet the night time rules.
So, what has been your experience with flares? Have you ever needed to fire one or more in an emergency? Have you ever seen someone else fire a flare? If you had an onboard emergency, are you sure of your procedures to safely fire the flares you have?