the one that goes on the right side of the hub that BoB Nutz Nut is hollow..
I cannot be the total precisely just exactly like you want resource,
total hand holding guidance,..
because I don't Own Exactly that hub.
and, I got rid of my BoB trailer, A decade ago.
as the 2x 20" wheel Burly CoOp made Flatbed suited my Utility needs much better,
than a 1 wheel trailer.
I tow that with A QR skewer Mounted Hitch , Rohloff CC hub,
or their standard Alloy forged hitch mount , now
under the left axle nut on others like my Sturmey Archer AW3/ Brompton BSR.
Or my Derailleur bikes..
2nd trailer for the Brompton, now, is the Carry Freedom City, an also folding trailer.
it also uses a left side tow, by a fitting secured under the left axle nut.
Last edited by fietsbob; 02-07-12 at 01:05 PM.