Definition: Wakeboarding term used to describe when a boat driver makes a wide turn and crosses over the
wake his boat has just made. The wakeboarder rides on the inside of the turn and he hits the two wakes as they meet, where the wakes can be up to three times the size of a normal wake. This can result in extra high air by the wakeboarder.
Pronunciation: dub'l up
Examples: A double up contest is often the last feature in a wakeboarding tournament because the wakeboarders have a chance to wow the spectators with really big air.