Right now I have a JD180 42" rider and a 21" pusher on a 4'x8' trailer. I hope to move up to a 60" ZRT. May or may not go with a bagging attachment. I think a 60" mower should fit on a 6' trailer but not sure if it had a bagger if there would still be enough clearance. And would a 7' trailer work out better or wasted space.