I did mine at a local parking lot and once there I searched for the levelest spot. Make sure the trailer and truck are loaded as close to camping ready as possible. I actually did mine at the end of a camping trip. Checked it before heading out this spring and all is still good.
Lots of good info on the net if your hitch didn't come with instructions. There was a youtube video that I followed that worked well for me.
2007 Shamrock F19 hybrid - 2010 (22 nights), 2011 (24 nights), 2012 (11 nights)
2013 Surveyor Select 235RKS - 2012 (6 nights), 2013 (32 nights), 2014 (26 nights), 2015 (37 nights), 2016 (14 nights)