Crash Course: Appropriately shaped like a broad smile, the Thunder is made for those who like to experiment. One or two people can ride it seated, kneeling or belly-flopped. It becomes unpredictable when you lean it over on one side, thereby creating a fiendish crooked smile.
Moment of Truth: Our 280-pound strongman, Mike Sellers, found out that the Thunder in a storm of wakes and whips is impossible to control. It’s especially true when this, or any, tube is filled tight enough with air to bounce a boat key off of it.