I'm with Jeepbluetj: Aeropress. I used to use a Lexan camping French press, because I got to the point where I was only doing French press at home. However, what's easy to clean under running water in the sink at home is not possible in the boat on the hook (with no pressure water.) A French press is simply a MESS of wet grounds to deal with. Pretty much dump the grounds overboard, then wonder how to clean up the screen and the carafe.
So then I heard about the Aeropress. If you do it "inverted," eg. insert the plunger end just enough and stand it up on the plunger, you can steep the coffee for a few minutes before pressing. And when you're done, you eject the "puck" of wet grounds into your garbage, and clean up the rubber plunger with 1 paper towel.
The only drawback to the Aeropress is that it does one cup of coffee at a time. Because the barrel of the Aeropress holds maybe 8 oz, and I like a mug at least twice that size, sometimes I set it up, pour in a full barrel, let it drip out, then pour in another barrel, and then press. But I think it takes too long to drain through, which is exactly the reason I stopped using the single serving pour in conical filter type. That's why I do it inverted, so it's good and strong, and then fill the mug the rest of the way with hot water.
I like it so much, it's now how I make my coffee every morning at home.