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Jim,
I think those devices are routinely advertised in "Trailer
Life" magazine. I have never seen one in operation but one of the
old-timers in the local WBCCI unit mentioned using one at a rally I attended
several years ago. He lives in the middle of a block and has to back his
trailer into his back yard via a narrow alley. He had a 34' Limited the
last time I saw him so it was not a light weight or short trailer to horse
around with a hand directed motorized tractor.
Harvey
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