I have never had a clear sky flight across the Strait,
Back in the 80's when I did my Un Restricted License, I had to do a Mainland Nav, Wynyard to Essendon via King Island, onto Moorabin then back to Wynyard via Flinders. It made for a long day.
+1 for Aussie Bobs post, anything higher than 500 feet is a bonus.
Enjoy your trip
Regards R W