Based on my observations, waving is extremely hard to time. You have to get the width right, as well as the horizontal speed, or else it gets jumped. Also, it may not be intuitive to everyone, but it is going to be backwards 1/2 the time waving it! LOL
Just pinging everyone to see what methods they have used for mounting it. I was thinking of trying to power with a continuous rotation servo, but my gut feeling is it will not provide enough torque to spin it, given the weight, and could end up stripping it, or burn the motor out.
I was also thinking of mounting it on a light weight board, and drilling it out to have a handle, that could spin freely, like a pin wheel. Perhaps doing a light-weight fabrication using bearings to reduce friction as well.