I would go for a Scarp 2 if you are headed for Tassie. You could use it with the extra poles if you were headed for the snow and leave them at home if you are just going to encounter rain. I have a double rainbow and The One and find them suitable for 95% of the hiking we do in SA, the extra ventilation is welcome in all except winter. Tarptents are awesome, I would never go back to a conventional tent that is sold here. I haven't used a groundcloth with the rainbow and have had no problems with punctures as long as I spend a minute clearing the ground before pitching. If you don't want to get the base of the tent muddy you can use a painters drop cloth or Polycro groundsheet from Gossamer Gear.