Luke depending on how much of the Allagash you do, there will be at least 2 portages..Churchill Dam and Allagash Falls. I’d go with a 16 foot as opposed to 17 foot or bigger. Materials, I’ve only ever had ABS boats. But I’d go with durability anyway.
...Love your channel ... The tips and tricks are forever priceless ... I've spent over half a century in the backwoods and on many waters and always seem to find new and different methods to improve on old learning and habits .... As the years climb ,, 3 minutes is about all came remember .... Thank You SO Much .... Stay Safe ...