I would start by mapping out the island and identifying strategic locations such as choke points and high ground. Next, I would establish a base camp with a well-defended perimeter, using my crew to scout for potential threats. I would create traps and hidden escape routes around the treasure's location to deter any would-be plunderers. Finally, I would employ a system of lookouts and signals to alert the crew to incoming enemies, ensuring they are always prepared to defend our newfound wealth.
Imagine you are a pirate captain who has just discovered a hidden island filled with treasure. Describe how you protect your newfound wealth from rival pirate crews.