This week, under the watchful eye of leading Surfer Sam Lamiroy, Chris and Jonny's challenge was to master the notoriously difficult art of Surfing.
The boys headed down to East Looe Beach in Cornwall, near the location of their Show In A Field programme the following day, where they learned the basics on dry land before heading out in the water to try to ride the perfect wave.
Watch the video to see who was this week's winner by clicking play above.
With thanks to Wally Scarah and the East Looe Town Trust for all of their help on the day
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