Tours of the Greek Isles

In the late '70s and early '80s I took two "yacht" cruises from Piraeus, one
to the cyclades, the other to the dodecanese. I put yacht in quotes,
because the boat was small, with about 15 travelers aboard. The company I
arranged the trips through was Do-As-You-Like Tours, Inc., sales
representatives of Viking Tours. Do As You Like seems to be out of
business, and a search for Viking Tours turns up too many hits for me to
sort out, and with many hits being on large cruise ships.

Can anyone here direct me to a tour similar to the ones I took 20 years ago?
Or at least to a tour company I can speak with? I live in the US.

Thank you in advance.
--
Ian Burton
[Please Reply to Newsgroup]