The Estuary is salty, there's crabbing that goes on there. I don't know how far up river the salt is but you will be in it if you are fishing where everyone else is.
I run a 20' NW Jet all over the place, I've had it out to the 125 line chasing tuna many times, out halibut fishing many times and she still looks like a well used 10 year old boat. Just clean it and no one will ever know.
Eye Candy