 The men had to go upriver to find adequate cypress trees to cut for the blockhouse's framework and siding.They nearly mutinied so Barnwell had to offer extra pay, and probably extra rum rations, to provide incentives for the men to go back out to cut more trees.Also, in addition to these accomplishments, Barnwell managed to sound out much of the river and charted a route down the coast to St. Simons Island.