What they say:

The Happy Seat/Happy Thruster Combo is the ticket for any playboater looking to improve their ride substantially. Our team has won numerous events by getting bigger air out of their moves thanks to the Happy Seat/ Thruster Combo. The Happy Thruster/Seat, in combination with the All-Star is a dream come true for any playboater. Try it out and you?ll never go back! We haven?t paddled any playboat without the Happy Seat/ Thruster since they've been designed in '05. When wave surfing we have just enough air in the Happy Thruster to act like an implosion prevention device, and when in a hole, we blow it up for major pop!