I had an opportunity to play with the height of the arm attachments today. I originally put them low (front is below level) as others have been saying this is the ideal position. I experienced "bucking" while driving at any speed. I raised the front 2" above (slightly above level) and the "bucking" is gone. I designed my attachment (made with 1/4" steel plate) to be totally adjustable in height so I can raise/lower it well above/below level as a test. While this may not work fer most single wheel trailers, it's been working fine fer this one.
