For the last challenge of this series, Robson heads to the last frontier, Alaska and finds himself up against tough local champions.
His first opponent is Niels Green, an ex-marine who now makes a living selling guns! In Resurrection Bay, 125 miles south of Anchorage, the boys do battle over silver salmon, or coho, the first to catch six being crowned the winner.
Heading down the Alaskan panhandle, Robson makes his next port of call Annette Island, a Native American reserve which is surrounded by protected, pristine waters in which reside five species of salmon. This challenge involves Robson taking on local maestro Dustin to see who can be first to land three different sorts of salmon. Local police chief Roger is on hand to make sure the boys stick to the letter of the law...
Jumping on a float-plane, Robson and his next opponent Julie, head into the wilderness to Orchard Lake in search of cut-throat trout. In the Tongass Forest, they compete to see who can catch the most.
In Homer, the next fish on the competition menu is lingcod, and Robson crosses rods with Keith, a record-breaking fish guide who mentored the Geordie on a previous trip. A strong rip tide creates a heavy swell on the trip out to sea, giving the boys a window of just 45 minutes to see who can land the biggest lingcod. Will the windy weather beat them?
Homer is known as the home of halibut, and taking Robson on in his final challenge is Ben, "who has halibut in his blood." The guys head out towards the Barren Islands with a simple challenge – the man who catches the biggest fish wins.
At the end of his first season, did Robson win, lose or draw?
Robson tries to catch the curious-looking and elusive elephant fish is Tasmania.