This seems like a worthwhile effort. I recall adding a couple of profiles for people who probably/apparently worked on England's canals, but I recall that the occupational information (probably from census sheets) wasn't entirely clear. This was while I was working on a connectors activity, so I wasn't doing thorough studies of the biographies of most of the people I was researching. I've also added a couple of relatives in the United States who were "boatmen" or apparently worked on canals. I suspect that their relationships to specific rivers or canals were obvious to the 19th-century census enumerators who recorded their occupations (for example, they may have resided at the locks they kept), but canals have been abandoned and bridges have replaced ferry crossings, so historical research is now necessary to tell their stories.