Headboat tuna trips range from 18 to 48 hours in length. The standard 22-hour overnight trip, which departs in the evening and returns the following day, runs about $350—a couple hundred bucks less than a share of a private overnight charter. The price increases incrementally with the length of the trip, but if you can swing the fare (and the extra time out of cellphone range), jump on an extended trip. Longer trips have more time at the rail, and the captains usually add some variety to the fishing. This could include stopping at wrecks for cod and pollock, drifting for tilefish, or buoy-hopping for mahimahi.