My anemic 2.3 does fine backing my Starcraft Meteor up my 200' driveway (approx 15 degree) as long as it's in 4 Lo . Another trick is to mount another receiver box ($40 at WalMart) under your front bumper and then push the camper up. It might look funny at first, but you get great maneuverability for placing your camper - especially in unimproved campsites and it eliminates the neck strain of looking over your shoulder.

If you go to the Zoo, always take something to feed the animals - even if the signs say "Do Not Feed The Animals". It wasn't the animals that put up those signs!