Are you sure none of the hoses won't reach? I wouldnt bother trying to line up the BH to hook up lower pin, just back in far enough to hook up the hoses. Once you got it hooked up , you can use the stablizers to lift the BH frame off the ground then disconnect and line up bottom pins. Just like Volfandt says, if worse comes to worse, just use the FEL to lift the BH frame off the ground so you can block it up.
I had to use the FEL once due to the uneven ground outside and the BH sat in a depression so the hoses were nearly 8 inches away! (pretty humbling stupid, even for me) This experience taught me LOOK underneath the BH frame and see how much space there is before dropping it. Now I always drop it on a peice of scrap 4X6 wood 6 inches long I had laying around. I hate the thought of paint touching the dirt or on concrete floor sucking up the moisture, so when the time comes to put it back on, its a peice of cake every time.