Adding , for posterity ..

Living here , Bike Tourists, Towing trailers, and racks & panniers, pass through all summer.

Toured internationally , racks and panniers .. since considered, the option of a trailer
set up so I could wear it (back-pack straps) to climb stairs , and carry the bike un-laden in my hands..

I'll offer: 2 wheel trailers, had more usefulness between tours, than 1 wheel types..

sold my BoB, got a Burly Flatbed. [the CoOp era, w 20" QR wheels] ..
& A canoeists Portage dry bag.. it has the back pack straps..