Jdpber, thanks for the offer. I'll take you up on that some day. I own a Jeep so fully aware of the setup. If I were to get more ground clearance, I might as well go with larger trailer wheels and new axle since I'm also thinking about getting the brakes to work anyway.
Redwood, you said the magic words, skid wheels are not exactly the way I want to solve this problem. I want to increase the angle of approach and angle of departure on the trailer. Skid wheels prevent the gear boxes from being crushed, but did nothing for angle of departure at the rear end.