500cc is plenty to use a atv type disc setup for foodplots. What many don't realize is it's the gearing the brand of atv is setup with, and weight of machine.Some are designed to be work horses, and some are designed more for trail speed. If your looking for a work horse, check into gearing. As a example my atv is a 500cc Arctic Cat. Its tops out at about 54mph down a hill, my brothers 400cc Yamaha will blow it away down a rd like nothing. But hook onto any type of equipment, or small tree. All his machine will do is dig into the dirt in 4wheel. Mine will pull to its hearts desire. For my use I stay away from what I consider more trail type machines. Go with a work horse. Heck I can't see doing 50mph down most atv trails anyways, so whats the sense. But thats just my 2cents.