Some information on Trent Severn
We have done the full length of the Trent Severn twice. Once, long ago, in a small runabout which I had built and once in the late 80s in a 32 foot sail boat during our 'circumnavigation' of Southern Ontario (almost 1500 miles). We enjoyed the Trent Severn. Locking through is set up for pleasure boats and easy - much easier than the Welland which we have done twice. The route is picturesque, historic and changes as you proceed (the end to Georgian Bay from Lake Simcoe is distinctly different than the south end to Lake Ontario so you should schedule that into your plans at some point). You must unstep your mast as there are lots of relatively low bridges. The length of time to do this depends on the boat and mast (and your familiarity with your rig). With the 32' sailboat with keel stepped mast it took me about 3 hours with some family help, including folding the sails, coiling the lines strapping the mast and boom on the boat etc. It takes a bit longer to put it up as you have to lead the lines and tune the rig.If my experience in the late 80s is any indication. in midsummer there will be a lot of lock traffic through some of the vacation lake locks eg. Bobcageon.Transit fees plus mooring fees (if you moor by a lock) and lots of other information can be found at http://www.pc.gc.ca/lhn-nhs/on/trentsevern/visit/tarifs_fees_E.asp?park=102