sounds like a letdown of a session
You can check transparency near sunset, if the sky is white/milky within a few tens of degrees of the sun, transparency will be poor. You can also check the horizon during the day, any brown/grey/milky muck near the horizon will spell doom. Also check the blueness of the midday sky...if it appears a washed out, england-style "baby blue", transparency will be poor.
Never mind, you'll get much better nights soon, what being in Mt Isa and all
