OBRIEN RINGO BOOKER 3 PERSON BOOKER 3 U Deck Series The brand new Booker 3 appeals to every driver to feel how safe they are with the angled edges of the tube. With 3 levers along each side and 6 levers leading forward, riders have multiple grip options and direct direction of how the tube rides on the water. SofTec top takes it to a new level and makes this U-Deck series tube a guaranteed winner. This O'Brien towable boat tube has a capacity of up to 3 people or 510 lbs. Use a tow rope with a tensile strength of 3,350 lb.