Can someone tell me if a pull behind aerator works faster than a walk behind model? Also, is this available at Sunbelt or other rental place? Is the width much more than the wb models? I've read some of them are only like 20 some odd inches, that would take a long time on an acre wouldn't it? I would say like 3 hours at least and that would be just one pass, not going cross ways like is reccomended. Can u use one of these on any tractor or rider that has an attatchment to pull things on or just certain brands? One more thing, what should I charge to aerate an avg acre propery? Cause I've never aerated before and have no idea how long it's going to take me or else I would be able to figure a price. I'd like to make at least $40/hr, and I'll have to rent.