Sea route for Fellowship?

[Tuor of Gondolin]

This is similar to an earlier thread I started, but perhaps there are some new views on this sort of "alternate FOTR" path that Tolkien might have had them pursue rather then Hollin, Moria, Lorien, and the Anduin.

There seems an obvious alternate way the Fellowship could have taken to get in the vicinity of Mordor, a sort of "back door". Have Cirdan provide a small fleet of ships to sail south. While it would have been too dangerous (Corsairs) to go all the way to the mouth of Anduin, they could have landed in the Druwaith Iaur and gone over passes into Anfalas. Sauron never had a navy and of course Saruman didn't. This could have worked if Tolkien had the quest start in the summer, either with Gandalf, the hobbits, and perhaps Aragorn heading immediately west, or with the Council of Elrond held in the spring or summer (when the East-West Road was much safer, then have Boromir, Aragorn, Gandalf, Legolas and Gimli head to Hobbiton or Bree to decide on "ways and means" with Frodo and so go on to the Gray Havens. Rohan and the Paths of the Dead could still have been theoretically incorporated, and perhaps even Fangorn, and it seems not unlikely that Cirdan would have cooperated (as he did going back to the First Age, especially with his good working relationship with Gandalf. Any opinions, other ideas?