If the boat accelerates or makes sharp turns, the tuna may break the line or slip the hook. [substeps] Under these conditions, the tuna should swim up alongside the boat and present itself for gaffing.
[header] How to gaff a tuna [title] Keep the boat heading straight, at a low speed. [step] Once a member of your fishing party has caught a tuna on the line, slow the speed of the fishing boat and don't make any unnecessary turns. This will make it easier for the angler to reel in the tuna.