Inshore we use a 6' aftco with a 3" hook, offshore it is a 6' aftco with a 4 or 5" hook, we carry one of each. We also carry atleast one flying gaff, usually with a 6" hook, but I agree carrying a larger hook would be advised. We also carry a harpoon, most guys I know like to stick a fish with a poon instead of a flying gaff, it really is a personal pref and everyone is different. Depending on the type of fish, size and conditions, we will choose between the flying gaff or harpoon on a big fish. The poon and flying gaff are always rigged and ready to go, but stored out of the way.