I'm no fisherman and this is by no means the "ultimate" rig, but it's what I've always used with good success: handlines. Got my first hand line as a gift from an old Hawaiian while living on O'ahu, caught a 75 lbs Ahi off the South coast of O'ahu during the '80's with it. (Was on a 22' sailboat at the time, now that was a challenge!)
Then I started making up my own using "tuna cord" (1/8" diameter braided nylon) to a swivel then to 10 feet of heavy mono. At the "boat" end of the rig I usually tied a bungie to take the initial surge from the fish
hitting the lure. For lures, in Hawai'i I used anything that looked like squid and off the South coast of California
I used Mexican Flag feather lures. On the trip from the Channel Islands to San Diego
I would always catch Bonito every time I dragged the lures.
While on a research
ship that was working on the mid-ocean buoys that NOAA maintains out there, I once tried to land a mahi-mahi with a screwdriver tied to the end of a heaving line. Damned if a mahi didn't chase and bite that thing. It even held on to the screwdriver long enough for me to pull it half way up the side of the ship. Had it held on all the way, that would have been the cheapest (and most bizarre) rig I'd ever used to land a fish