Look into the kevlar or Carbon fiber canoes, they are a bit more expensive but a 17 footer weighs less than 35 pounds and just glides through the water. my buddy has one it's really niceView attachment 154253
I have two canoes, the first one I bought used - a straight up Kevlar with Aluminum trim ( Swift Kipawa - 16.5 ft @45lbs) and the second I ordered (Swift Winisk -17.5ft @ 38lbs) in Carbon-Kevlar trimmed in Cherry...
Of the two, I much prefer the Winisk. Whilst the extra length requires a bit more finesse in the creeks, the extra capacity, speed and stability on the open lakes really makes up for it. Both canoes are used primarily for multi-day backwoods canoe-camping up here in Flatario mostly in Algonquin Provincial Park.