Here's what I use. My trailer has the dove tail floor in it and I have the ramp door with the extensions Hammeritme spoke of. My dragster is 240" WB. I don't lift the front of the trailer at all, as this hand cart lifts the front end of the dragster about 12" off the floor. I don't think you have a Princess Auto store in the US but the cart would be real easy to make. I took the trailer ball off the cart and built a small cradle to take it's place. I position the cradle under the frame at the front of the car, pull back to lift the front end and walk the dragster out of the trailer. Loading is just as easy. The cradle swivels on the cart so I can swing the front of the dragster 90 degrees if necessary.
http://www.princessauto.com/truck-tr...eyword=trailer