I concur, Pete. The few times I've been separated were near coastal (or inland) waterways, and I was comfortable making the swim to shore if I had to. Might take a while (like Pete's backstroke), but a good PFD and gear go a long way in that respect.

So, the consensus seems to be a drogue of some sort, some way to grab the boat as it goes by, and items for good communication/visibility on your person

My hydration pack has a storage area where I keep GPS, VHF, cell (all in bags) and a jet-ski emergency pack which holds 3 flares, dye marker, mirror, and I think I may add the diver sausage for races like Steeple, GT, EC, T500, etc.

Oh, and my PB&J sandwich. Only thing I've found that still tastes good after being smashed into oblivion and sprayed with salt water.

Good training for both crew would be MOB either dropping sail and turning around or (if flipped) setting the boat up for minimal drift?