I have a 1916 morris type 3 with short curved decks and fir gunwales. I am looking for the length of the bow and stern thwarts. I do have the center thwart. And never having steamed gunwales any tips. Do I need to bend both sides of one end of the canoe together or can I bend one side of one end at a time. One side has a somewhat complete gunwale the other side is gone except for a 3 foot section on the bow. Could I possibly bend both gunwales on one side and flip one over? Maybe that's a little unorthodox. Thanks.