And as for needing a big wake to do big jumps, BS. You only need good technique to do big jumps. Some of the best riders can do complete flips in wide open water...no wake needed at all. This video has been posted up here before, but it's of Scott Byerly in his younger days, doing massive air tricks behind a barefoot/slalom boat (AKA a nearly NO WAKE boat)
http://www.wakeboardreport.com/archives/2008/02/