A hand line with line of sufficient size to be comfortable in your hand, using a pair of leather gloves will do fine. A pole will not as you can't "pump" if you don't stop the boat. Set the hand line from the quarter, not the stern or the lure becomes lost in the swirl. A heavy shock cord at the onboard end is an absolute necessity. Use good quality swivel snaps to attach leader (wire) to hand line.
Set the lure twice the length of the boat at six knots, shorter if slower, longer if faster (not critical, but a good gauge for distance). You want to see the lure "bubbling down the face of the second wave back, if possible. Remember it is the boat that attracts the fish; if the lure is too far out it won't work as well. Also by fishing off the quarter the line is affected by the quarter wake which causes added motion to the lure.
Specific colors and lures for dolphin; green/yellow, tuna; red/white, wahoo; purple, all feather lures with a metal head often with red eyes about 1 oz. I generally use a blue/white plastic squid with a 1/2 to 3/4 ounce egg sinker in the head, a good all fish lure, but not the best if targeting specific fish. The faster you go, for tropical pelagic fish, the better; I have hooked plenty of fish at 17 knots.
Once you get the hang of it, experiment with making your own skirts after the feathers are gone; colored plastic bag material shredded into a feather like consistency work very well. Recycling to eat, not too bad.
"Any idiot can make a boat go; it takes a sailor to stop one." Spike Africa aboard the schooner Wanderer in Sausalito, Ca. 1964.