Join Date: Sep 2005
Bikes: Windsor Fens, Giant Seek 0 (2014, Alfine 8 + discs)
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I've seen a few DIY solutions that I like.
For a single wheel trailer, I think it'd be hard to beat cloning the U-hook over axle extensions of the BOB trailers.
For two wheels, a rubber hose is decent, but I think I might go with an air chuck as a quick release and a couple of 3/8" ratchet universal joints, all welded/brazed/whatever together. I've seen both used.
Work: the 8 hours that separates bike rides.