I have a 1999 Jayco Heritage pup. We are getting ready for our first trip this weekend and in all of my excitement for camping, the pup is pretty much full (including the storage bin on the front). I am wondering if I can add a hitch to my pup so that I can put on one of those cargo carriers on the back to carry a couple of coolers or one of those plastic truck bed storage bins. I still have to store fishing gear, a few more camping items etc. Is this possible?