Read reviews for the Fisherman Series Tackle Bag by Copper River as submitted by your fellow paddlers. All of the reviews are created and written by paddlers like you, so be sure to submit your own review and be part of the community!
This bag is NOT waterproof, but I find it much more useful than a waterproof dry bag. The material has a water resistant coating and is very rugged.
The small version of this bag measures 18.5"L x 10"W x 7.5"H. In the main compartment I can fit a small dry case (wallet, camera, binoculars), rain coat, lunch, gloves, a book, water bottle, etc---basically everything I need for a day on the water. There are three large exterior pockets and several smaller pockets, including a map case inside the lid.
The zippers and zipper tabs are heavy duty and work very well. The bottom isn't waterproof but it has four rubber feet to keep the bag out of any small amount of water in the bottom of your kayak or canoe.
For security I run a line from the bag to a carabiner clip on the deck so the bag doesn't get lost if I overturn.
This would also make a great general camping or canoe gear bag. Should cost you about $35 at Cabelas.