Why lay down when you can stand up? Learn to stand up paddle, or SUP, in Kailua. This ancient water sport has made a major comeback with the help of new board technology, increasing the performance and ease of riding. Stand up paddling combines the thrill of surfing with the techniques of paddling, a match made in heaven. Kailua offers a variety of conditions, from flat water cruising to moderate chop and rolling waves. Lessons generally stick to the calmest areas to practice basic strokes and techniques.