Hello! I've enjoyed this website for a while and finally registered so I could reply to this topic.
I remember this ride----I went to the park back in 1988 and it rained all day long. This was a boat ride, kind of like "It's a Small World", and the loading station was one of those turntable platforms that are common on rapids rides. The load was outside, and the flume went inside a showbuilding (you entered the building through a tunnel with colored lights and Papa Smurf greeting you with "Have a Smurfy Day!). The Smurfs themselves were simple figures----sort of like the character animation used for displays at the Disney Store. The Smurfs were doing all kinds of things, and of course, we run into Gargamel (a large figure). There was no mouth animation on any of the figures----I remember not being very impressed by this ride. We did take pictures, but for the life of me, I don't know where they are! There was a tiny drop at the end.
This ride was originally a Hanna Barbera ride, which I never experienced. I have read that the "drop" in the old ride was in a carnival section of the old Hanna Barbera ride.
By the time I got around to revisiting King's Island (1996, I think) the park was renamed "Paramount's King's Island" and the Hanna Barbera stuff really took a backseat to Nickelodeon (I loved the Hanna Barbera stuff as a kid, so the park did not feel the same anymore to me). The Smurfs were gone and the non-Hanna Barbera "Phantom Theater" dark ride replaced it (now, of course, Scooby Doo resides there and Hanna Barbera Land is no more).