At the local public lake last week, it was my Malibu and two guys in a ProStar out at dawn. We were doing only slalom. They were alternating slalom and foil-boarding. The fact you can ride a foil behind an un-weighted ProStar gives me hope it'll catch on and become more popular than surfing. Though from a tricks perspective, you are more limited on a foil. You can't go backwards, can't do spins, etc...