Crab pots, tornados and cold temps

It has been 6 days since we stepped off the boat and we are starting to feel it. We have been going basically from sun up to sun down, and although it has been nice to make some progress, we are exhausted. Yesterday we spent the first half of the day trying to figure out a plan to deal with the tornado warning we learned about over the VHF. We were trying our hardest to make time in order to get to an anchorage with decent protection. We pulled into a little creek in the marsh and tucked behind a stand of trees at 1300, knowing the front with severe weather was just minutes away. We quickly tied everything down and then all went below. There had already been tornados to our west and the radio warned of 75 knot winds accompanying severe thunderstorms. We watched the radar carefully and were relieved when the worst of it passed to our south. The front moved so quickly we pulled up the hook an hour later and travelled another 15 miles before dusk. Then last night it blew hard out of the NW. Thankfully we found an even better creek with excellent holding, but Momo still did circles as the gusty wind and strong current fought for control of her position. Things were quieter this morning, but Momo's dancing last night caused the anchor chain to wrap around a crab pot. Nevertheless we untangled and were on our way by 0715. About an hour later, just outside of St. Simon's Island, Amie and I were in the cockpit when we heard a bang from beneath us. I immediately looked at the depth sounder and saw 18 feet. We were in the middle of the channel. I throttled back and we looked behind us and there was a crab trap buoy floating away in three pieces. It must have been submerged and at the exact depth for our prop to chop it up. We spent a few minutes making sure everything was running fine and we were relieved to find that indeed it was. We seem to have been having moments like this recently. Two days ago we were about 100 yards shy of a particularly troublesome area with lots of shoals. In these areas Amie and I often work together to navigate them. We were both in the cockpit, looking at the chartplotter, depth sounder, water in front of us and the ICW guidebook when all of a sudden all of the instruments went blank! We had a brief moment of panic until we looked down and there was Scouty at the instrument panel with a guilty look on her face. She had hit the breaker switch (when just a couple hours earlier she and I had discussed why she should never do this). To top it all off, it is stinkin' cold. It has been in the 30's in the mornings and today I don't think it got out of the 40's. Tomorrow morning is forecast to be in the 20's. With no heater on board, we have been chilly. We are REALLY ready for warmer weather. We can see Florida from our anchorage here at Cumberland Island, so we can't be that far from warmer temps, right?
Tomorrow we are taking the day off to explore Cumberland Island.