Don’t have big bucks come to my feeders, spin or gravity, but on the rarest of occasions. Does will come a little early and I watched a yearling stomp at the feeder until it spun last year. I only have mine spin about 1 or 1.5 sec and throw a couple pounds. I also start the feeders up mid October with a one second spin max. The deer are on acorns at that time but they get used to the sound real quick.