That OT Tripper looks very nice and should serve your family very well, Anedae. It's a capacious and stable canoe that is still maneuverable enough to paddle in whitewater. I especially like the webbed wood seats better than the original rotomolded seats.
Old Town makes a wide snap-in third seat that should fit the Tripper. You can sometimes find these very cheap on the used market.
Old Town makes a wide snap-in third seat that should fit the Tripper. You can sometimes find these very cheap on the used market.