I paddled from Hope to Fort Langley last week. I enjoyed the trip. Here's a few notes:
-The first 10kms from Hope had some rough water and strong winds. Nothing crazy... but I don't have river experience and it was enough to get the adrenaline going.
-Low waters levels meant large gravel bars on either side of the river. Lots of nice places to pull over and have a snack or take a photo.
-First night I camped on an island near Agassiz. Bears definitely frequent this area when salmon are in season.
-From Agassiz onward all sorts of smells in the air. Mostly smelled like animal manure.
All together I enjoyed it and would recommend to anyone. I posted some photos at http://paddleacross.blogspot.ca