Ultrasonic: our most efficient windsurfing board. I can’t overstate it: you’d be amazed at the efficiency feeling this board provides. In a nutshell, it’s a super efficient version of the iSonic. It’s ultra wide and ultra skinny, but very easy to use (unlike Formula boards).
I recommend it for those who windsurf often when winds are quite light. People who own an 8.5 and 9.5m sail, and use it often. People who are confident freeriders. It’s my personal board for Thailand. I wouldn’t recommend it for those who are using sails no larger than 7.5.