How does Gulliver spy on blefuscu?

In Jonathan Swift's "Gulliver's Travels," Gulliver spies on Blefuscu by using a small boat he constructs from the materials available to him. He sails to the island of Blefuscu, where he hides and observes the activities of the Blefuscudians. By carefully positioning himself and utilizing his small size, he gathers information about their plans and resources without being detected. This allows him to understand the political dynamics between the two nations.