As long as the frame is lower than the running boards or rockers your home free. Take a piece of 3/4 plywood and make a couple holes on on end. Jack the front of the car up high enough to reach the low part of the frame with the trailer. Slip the plywood under the car with the front over the end of the trailer and secure to the frame. Lower the car onto the end of the trailer and winch on using the ply as a skid. Attach the winch to the frame not the ply. Won't tear up your trailer bed and slides easily over humps and bumps. Just an afterrthought. Throw a blanket over the cable while winching. It will keep the cable from whipping if it should break.

Oh, by the way, just reverse the procedure to get it off.