Our dunk tank has a see through window so you won't miss a splash! A cool summer-time event enhancer! Professional Carnival Tank, mounted to its own trailer. (1 7/8" Hitch Ball). Operates SAFELY with tennis balls and specially designed mechanism that will not hurt the "dunkee". 5-99 year olds have the ability to dunk your volunteer. Easily towed, typically fills in 45 minutes, empties in 15 minutes.