We troll for yellowfin tuna all year. Our pods of spotted dolphin attract tuna in quantities that vary during the year. However, from June through September, yellowfin migrate to our waters to spawn. We troll in a similar fashion, but we focus on water depths from 500 to 1,000 fathoms off the island of Hawaii. When the ocean currents push in toward the island, we troll in 100 to 500 fathoms, looking for signs of tuna and the presence of bait.