Here's the update, got into Snug Tiers no worries, only to realise I left my lovely map on the bedside table
Couldn't be bothered driving back to Hobart, so abandoned the trip
Decided

I will do Adamson's Falls on way to campsite at Cockle Creek

Got a flat tyre 500m short of start of walk
After changing Landcruiser's tyre with the worst #@%$#* jack ever invented, got paranoid I would come back to car with a 2nd puncture and a lot more trouble, abandoned plan B
Tyre fixed in Dover(2hrs)
Drove to Southport, checked up on a friend, went for a walk on the beach, it was nice
Too cloudy for Aurora, though I thought I saw some flashes
Walked to Sth Cape Rivulet on Sunday, excellent day, walked 24km in 6.5 hrs. Legs sore, soul cleansed
Only surfers on the track, funny they walk all that way in, and then just sit on the shore looking at the waves.
That's what I do as well, but I'll take a picnic rather than carry a board
A few nasty landslides on the foreshore under Coal Bluff, would be very unstable if raining.
Night 2 - beautiful clear night, no Aurora, maybe not cold enough.
Some failures and some success, will try another assault on Pelverata soon. Maybe after the next good dump of rain .