What are my options for finding an inexpensive walk-on ferry out of Israel? Any chance of gaining passage on a private craft?
Many thanks.

What are my options for finding an inexpensive walk-on ferry out of Israel? Any chance of gaining passage on a private craft?
Many thanks.

Unfortunately not. The only ferries that exist are to Cyprus/Greece and arre rather expensive. Flying is bith faster and cheaper.
As for a private craft : You could always try but i wouldn't get my hopes up too high. Due to security concerns there aren't a lot of private yachts leaving Israel.

There are no "classical" ferries to/from Israel. What George says exist are not really ferries but erratically scheduled cargo ships and the like, which may or may not take you aboard for a rather large fee. As he says, flying is the only practical way to go to Cyprus, Greece and the rest of Europe.