OK, so we got lazy and didn't do our regular checks. We went out of town to see family and got a call Friday night -
"A HOSE BLEW OFF YOUR POOL AND THE YARD IS FLOODING - WHAT DO WE DO???"
Thank goodness we have shut off ball valves at the skimmer and return. I told them to pull the plugs on any electrics and turn the valves shut. The water had gotten down to the last 1/2" of the skimmer so thankfully the pump had not cavitated before any damage was done.
We normally check all fittings, etc., at least once or twice a week but have busy and blew it off. We had big wind and it moved the hoses that run from the solar panels to the SWG and the fitting was just loose enough to blow off with the pump pressure.
BEWARE - BBB maintenance is not the only kind you need to do regularly!