Mastercaster, you might not hear about it, but it happens, not lots, but enough to be a concern. Whatever method they use -- gillnets, dynamite ("Du Pont spinners"), snagging and just fishing every day and overlimiting when the fishing is good -- poachers find ready markets for their fish because they sell at lower prices than legally caught fish. This includes friends, neighbors, restaurants and fish markets. Plenty of restaurants and fish markets have been busted over the years for buying fish caught illegally. Poachers don't sell to licensed fish buyers like legal commercial fishermen, who get very low prices, they sell direct to people, markets and restaurants, cutting out the middeman.