Border C. is good, they do what you tell them to do! I am planning to strap mine up in a "freeloader" (supported by a "wideloader") on my homemade "extracykei). Justfor resting since he likes to run and my trips is not so long.
Lots of nice trailers in the BF`s "Utility Cykling" forum. Also my homemade "extra" is there in the sticky.