A catamaran runs between Refugio Pudeto and Refugio Paine Grande. A one-way ticket is CLP 11.000. Round trip costs CLP 19.000 Nov 2010.
Another boat runs between HosterÃa Lago Grey and Refugio Grey, but you need to book it on advance about 80 US $ p/p.
A minivan runs between Laguna Amarga and Los Torres to connect to the big busses, 4 times a day. The price is CLP 2.500 one way Nov 2010.
The rest must be done by foot.