The boatman shouldn't be prosecuted, the missionary knew the risks, may God bless his soul.I wonder what the locals did with the footballs and other stuff the missionary tried to give them...and I read that the boatman who ferried him to the island is going to be in trouble for doing so.
As for the footballs maybe they used them as hats ? I remember that some Amazon tribesmen used to kill oilmen for their helmets, turns out they cooked stuff in the helmets