There are a few downsides to hammock camping in general that we have to address before we can be confident that they're the right choice for us.
1. Cold weather and staying warm.
2. What if there are no trees?
3. Gear storage.
Half the fun of planning for a big expedition is researching and buying all the new gear specific to the trip. For a canoe trip that will be taking us 15% of the circumference of the earth, that means we need a mighty big boat.