I recently bought a 1985 CJ solo that has been converted to a tandem. I bought it for paddling flat water and mild rivers with my 8-year-old son because I can carry it without any help. However, the person who converted it seems to have placed the cane seats without much thought as to balance. Can anyone give me insight or direct me to a book or an article for determining the best placement of the seats, thwart, and yoke, as in the number of inches from the bow or stern for each? The canoe has been brought in to 30″ wide and it is 15 1/2 feet long. Thanks for any insights.