the jacket has a nifty smaller pocket on the left sleeve into which you can put a pen or a thermometer. that's another $50 credit, and tack on another $35 if you bring your own (unlocked) phone to the plan. the device can also be dropped from a helicopter in order to reach a swimmer’s location at a more remote area of the ocean. if veal bones are unavailable for the stock, you could use beef bones. it’s not super-complex, but it’s certainly not easy to deal with as you go farther — or further — along the path. 