I have always just used my framed hunting backpack(Cabela's Alaskan Freighter II) with it's bag for my canoe trips (longest trips so far 6 days).  Our lakes are fairly small & portages  probably avg almost a half mile in the area I frequent most.
I try & go reasonably light, but am not a "minimalist" as I like a little comfort (must be getting old).  Occasionaly I'm solo, & hopefully I will be having more trips with my son (9 yrs old). One of my anual trips is a 5 day with our church youth group.  I often end up carrying quite a bit extra to make up for smaller kids & some of the young girls when it comes to community gear.
I'm thinking of going to a dedicated canoe pack so there is less on the outside of the pack.
Looking at the Granite Gear Superior One.
Any input?