Those who looked at the website of this tour (see "Useful Links" tab "Bariloche to Puerto Varas") know what I was expecting. The boat, route and service where as expected, just the weather was different and in this case made a big difference in terms of what you could see.
The lake crossing tour started in Bariloche around 7.30 am. We drove along the lake Nahuel Huapi 's shore to Puerto Scarf where we boarded a catamaran to Puerto Blest.