Around the Dengie Peninsula - solo, in my 20' boat

On the Essex coast, I sail around the Dengie Peninsula in my 20' Norfolk Gypsy, I sail out from Bradwell, head down alongside the Dengie Flats, over the Raysand, and up the Rivers Crouch and Roach to Paglesham Pool. Then I return with the tide early the next morning. Whilst anchored for the night I also find a passage in a Joseph Conrad novel which describes one of the nearby creeks - an inlet which allows a boat to seemingly 'disappear' out of the River Thames.