one more important detail.....
grow your plant to a hieght of 1 foot or so then pet into flower for 2 to 3 weeks so it stretches and had a hard main stalk. by this time when you put it on its side ALL budding sites can recieve equal light and they will all grow up at the same rate.
back to the spinning idea......
encase the pots in pvc piping and hook to some sort of motor and use skateboard wheel bearings on the bottom. hmmmmmmmm
but then the buds wont gow upwards. as long as they get more mass I guess