Gotta love the Great Lakes and the fronts that go through them! My friend and I were once sailing our boat downwind with the spinnaker full on a nice Lake Huron day commenting on the nice spinnaker run the boat headed directly toward us was having. Somehow in the relaxed sunny moment of that day, it wasn't until the boat was almost upon us when we realized that we BOTH couldn't be sailing downwind in opposite directions! Needless to say we had a serious spinnaker incident before we could jump up and do anything about it. Quite surprised the rig stayed on the boat...
Mark