A couple of years ago, my wife and I were travelling back from Busselton on our 2012 Goldwing, after taking part in the Black Dog ride. It had been raining and the road was wet. Like a lot of WA roads, this particular bit of road was well used by trucks on hot days, as evidenced by the tar tracks causing shiny slick strips when wet.
I had Cruise control engaged and was cruising along at just over 100kph. As I was travelling along I entered one of these shiny wet tar strips. Before I could disengage the Cruise Control, the bike fishtailed probably about 5 to 7 times. It was the most scary thing I have ever experienced on a bike. The rest of the ride home was pretty subdued. Couldn't help thinking what might have been the outcome.
I think I lost my nerve from then on, riding the Goldwing in the wet, which is why I am now riding my ST1300.
There is no doubt whatsoever in my mind, that riding in the wet, with Cruise Control engaged, is a Very Dangerous pastime.