Long time ago, 1982. What I do recall is that I was terrified, I sensed that I had pretty much no control of the bike (probably not true as we did not crash) and I NEVER told my now ex-wife. I think I probably just managed to gradually slow down, stop, and take a deep breath. BTW, it was not a shimmy. It was more like a floating sensation. This topic has always fascinated me because of the experience and I simply don't buy the argument/theory that it is impossible to hydroplane on a bike, regardless of what any scientist might tell me.. I will also contend that the cited NASA study actually does NOT prove it impossible and therefore I am NOT dissing the scientists and am NOT denying the science.