Out of the Port of Allen the max depth of the canal is about 30'. Quickly as you head towards Belfair it shallows to about 5-6'. The bottom is mostly flat and with a 14' boat you should be fine, but take it easy. There is a park that Mission creek flows out of - I forget the name, but you will pass it on the way to the Port of Allen. You could get access to thw water here if you wanted to do the bank thing.

A couple of things to note. The Port of Allen is not in the town of Allen. To get to the Port of Allen boat launch take a left at Safeway in Belfair. Continue straight through the stop sign. This is the North Shore road. The boat launch is about two miles past the park that is mentioned above. You can get access (bank) to the Unoin estuary right where you cross the river. The launch at Allen is not the best place to launch a giant boat, but a 14 footer should be fine. As you leave the launch turn towards Belfair and you should see some fish rolling.

Steve