Sammons, the owner of La Jolla Kayak Fishing in San Diego, got into the sport 10 years ago after a bad back forced him to retire from his job as a truck driver. Someone told him that paddling was good therapy. He started guiding three years later when another astute friend told him that if he was going to fish 300 days a year, he might as well get paid for it. Usually, Sammons and his customers or friends go after the standard mix of West Coast inshore fish. For Sammons, however, the true "adrenaline fish" is the thresher shark. He has caught and landed threshers up to 172 pounds from his kayak, which is equipped with a bait tank, rod holders, a fish finder, a GPS and a cellphone.