When I bought my trailer it had an aluminum ramp setup in the back. There is a cross bar that connects to a couple brakets that come up off the floor. Then there are 3 ramps- one each for the outside skis and a double wide one for the inside skis. The idea is that you load four normally, then the ramp puts two more sleds up over the seats of the back ones. The problem is that the 2 extra sleds have to be pretty short. And all the extra weight is at the back of the trailer. I've never used it, but that's an idea. You could fab something of steel or wood for a little cheaper.