I have seen some guys use tuna / sardine cans as chum. They would take with them 2-3 cans (from the cheap type!) on their float, inside the suite, etc. When they need to chum they just open some holes in a can and drop it. The can sinks to the bottom creating a nice oily trail that attracts the fish. That could solve some carrying and /or storage problems I believe. But not sure if it would be as effective as fresh bait. Definitely not the tomato chili type!
Gino
