Chunking for Bluefin involves archoring on a good fishing spot known to hold bluefin. Once anchored, top crews deploy chunks, stick baits and live baits suspended on ballons at different depths. Most captains have their crew position the baits where at the depth they mark tuna fish on their fish finder.
Many top captains use Gamahastu Live Bait hooks. In determining the hook size, it is important to match the hook to the size bait that you are using. You shouldn't use a hook that is too large, because it will detract from the presentation of the bait.
All top crews use fluorocaron leader. Leader varies from 150-lb to 220lb, with many crews fishing light gear (150-180) to get bites when they are hard to come by. Most crews start off with a long leader (say 15 feet), so they can cut back and recimpt the hook on if their leader gets nicked up by dogfish or other pests.
Many crews using light fluorocarbon also use H crimps instead of G crimps for their 150 or 180 fluoro. The lower profile H crimp must be done carefullly, preferably using the Jinkai crimping tool listed on this page.
They also use these crimps to attach a small wind on swivel. This way, the leader can be wound all the way on the spool, protecting the flurocarbon during storage, ensuring clean decks, and allowing the angler to reel the fish as close as needed to harpoon it.
All crews attach the sinkers and ballons using rubber bands. Sinker weight is selcted based on the spped of the current and the desired depth that you are trying to fish.