Check out Ersa regarding Bass Straight crossings and certainly contact ATC to arrange over water skeds. If we're busy, you might get put on hold momentarily, but we'll get to you. I don't think Bass Straight would be a pleasant place to ditch, but at least the ball is rolling for recovery within 15 minutes of a failed report rather than hours later when someone might be wondering where you are.
Cheers,
R-S.