I've had a crack at this place many years ago. we were eating a place near there and this Canadian guy was tell us about surfing in a river, thinking it was bull until I saw this guy float by with a surfboard. Ran over saw what they were doing, had to have go.
Asked if I could give it ago, they gave me a wettie and a board, wasn't my finest hour, it does take some getting use to. Still, wipeout out in river - check that off the list