Sounds like fun. Things you need.
Knife, flint, water, food, vhf, cell phone, strobe, flares, signal mirror, whistle, extra line, extra shackles, a couple of tools(screwdriver, pliers). I'm sure there might be more things but this is a good start.
Don't put all your eggs in one basket. In other words don't pack all your equipment into one backpack. Keep some on you, some on the tramp, some on the forward tramp. That way if you lose one thing you don't lose everything.
Remember to stay with your boat. Only enter a life raft by stepping up into it as your boat sinks.
Mike Hill
www.stlouiscats.com