Ours is a light Oztrail 7. side folding. http://www.oztrail.com.au/canvas-produc ... T-07-C.php
Our last one was side folding ,but much bigger.
As for being too big because of shape! for a site, we never had a problem, quite the opposite.
When driving or reversing into a spot, its very easy to visualise the space needed.
Cannot comment on a rear folding, but when reversing my caravan ,I often have to get out to see the distance still behind me, hope that's clearer than mud.