My trailer is pretty high and my reiner jumps into it and will slide on the mats and/or slide on the asphalt when getting into the trailer if we have to load on a road. I have a side tack (only one rear door) and the ladder to the hay rack is on the rear of trailer. The trailer has a 60/40 rear door. With the ladder being in the way I am considering a half-ramp but they are hard to find aftermarket. Any suggestions or options?