Kailua Beach to Popoi’a Island (Flat Island) 4 Summary The paddle out to Popoi’a island (Flat Island) is an easy, family friendly kayak trip when wave conditions are right. It takes about 30 minutes to reach the island from Kailua Beach. The island is small, but fun to explore and has a small beach for … Continue reading Paddling Routes on Oahu: Kailua Beach to Popoi’a Island (Flat Island)