Roy - Do you travel with a full fuel station? This wouldn't help much, but what about traveling with fuel jugs in the bed instead of filling the fuel station? Or what about filling up the fuel when you're closer to your destination?
I can't tell from your post what your hauler is? (I don't recognize the model number.) You talk about your pin instead of your tongue, so I assume it's a fifth wheel. How long is your fiver and what's the configuration? Do you have a dedicated garage or open floor? And how many axles?
If you have an open floor, can you move your bike forward at all? (You said bike, right?) How heavy is the bike? Would it make any difference if you loaded it in backwards?
Can you load a heavy cooler and load it towards the front?