I have a anchor drag alarm hand held, it didn't go off cause I was unknowingly hooked on the old wreck, it went off later when we tried to get in Pass a grill Marina inlet and could not, just sand there and 3 foot waves will drag you into the rocks. I was in the wrong spot by Egmont Key, storm coming in-between Egmont Key and Anna Marina Island, north of Passage Key, southwest channel, 100 yards East of the bell, but the lines we hooked came from the West, South West, both up and down. 40 knot winds 5 foot white caps that night. We held or I would of opened jib half way and pulled around behind Egmont Key more for shelter. You truly Need 3 anchors, one front, one rear and one extra. 8 am back to 1 mph half foot roll. I'm in a bad movie and I can't get out. Batteries out, no anchor light, crew safety comes first, I call for a tow to Pass A Grill Marina for repairs before heading north in the IC to Blind Pass Marina and hitting two sand bars on the way, wiggle off with engine no big deal, no engine your stuck like Chuck.