Hey Ted. Not supped but done exactly that on waveskis. We were surfing the left (best waves I have had up there BTW) then at the end of the session played around on the crosswaves bit. That is at the end of the ride and can easily be avoided.
The amount of air you can get is mad - remember though you are strapped in to a goatboat - wouldn't be much fun on a SUP I wouldn't think. That vid brings back fond memories