We (the local bike coalition) use a customized version of their (Bikes At Work) longest trailer to transport up to twelve 15 foot long bike racks, plus portable awnings, tables, plastic barricades, rubbermaid tubs of tee-shirts and supplies, and sometimes a bicycle, to various street fairs and other events to set up valet bike parking stations and a booth to join the bike coalition.
Its killer up even the slightest grade, but its actually surprisingly easy to pull and control and stop on flat ground.
I find it kind of fun. The best part of pulling is definitely all the looks and comments.