Heya Stone14, sorry for the late answer on this, its been a hot minute since I roamed BCUK but I built myself a western red cedar prospector style canoe Canvas on frame. I didnt have any plans or PDFs to work from, but went from scratch and designed and built accordingly.
Might you be looking for inspiration or help I would be more than happy to help you get started.
My biggest pro tip I can give, dont skip on mold/fixtures to get things right the first time.
Its saves more time and money then the other route
Yours sincerely
Ruud van Tiel