Capt Tony,
But here's the rub.
Where do you store the canisters?
Some guy used 3" or 4" PVC pipe to stack them in like artillery shells and
festooned short lengths on his stern rail with hose clamps. Looked just like real west marine propane bottles in their blue sunbrella suits. He recycled the empties. That was cool. Keeping the tube full kept them from rattling.
A cruiser might have twelve foot pieces of schedule 40 along the side decks lashed to the toerail. Maybe you could toss them at pirates, one pound propane bombs, by the time you got to micronesia they'ld be empty tho. Where out there do you recycle micro propane bottles, anyway?
How about stowing them in the mast? Nobody thought of That, I betcha! You'ld have to send the mate up the mast every time you had an empty to put in.