Pete, if going Strahan you should look this up. One of the may highlights to we experienced in Tassie.
http://www.tripadvisor.com.au/Locati..._Tasmania.html
The River Cruise as well as Sarah Island are a must also.
http://www.viator.com/tours/Tasmania...FQMDvAodF40AkA
Oops also forgot the Edge Of The World
http://www.theedgeoftheworld.com.au/
Incredible memories from our last trip.
Peter