Coal is actually one of the least profitable. if coal gives 100%, then flax gives 130% and fish now gives like 133% Fish comes first as money, next is flax, then maples (a gamble), then coal. 10 workers: (at 100%) (fish)-132 Swordfish, 440 tuna (raw both) (flax)-1250 flax (maples)-no clue (it really is a gamble, your going mostly for the seeds) (coal)-stinks, dont even try it, pretty dumb....might as well mine it So do 10 on fish, 5 on flax. If your thinking about major profit, do 10 on flax, and 5 on fish, then spin the flax into bowstrings at lumbridge.