"One at a time, four tribe members would crawl in the mud under a net and then retrieve a ball from a stack of hay. Once all four balls were retrieved, they must remove the balls from their burlap casing. Then three tribe members would use small shields to bounce one ball at a time into a barrel. The first tribe to have all four balls in the barrel would win." ~ @SurvivorWiki
They use the Medallion and give it to the other tribe.
The advantages are starting the challenge with one ball already in the barrel and having one tribe member sit out the challenge.
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They also win either a tarp or fishing supplies.
They choose the tarp!
Proceed to tribe events.