Thanks Brent & David.
A few shots of the actual job in progress.
1. Footings all dug out. This is looking south.
2. Pier holes dug. They are deeper than how they appear in the photos. Note the tree roots I had to contend with - what a nightmare. I was only going to have one but a last minute suggestion by my builder mate and a change in size for my warm room meant I could fit the second pier in. It's not in the perfect location as I had already dug the first one out in a fairly central spot. It should work ok but. One for imaging and the other for visual at the same time.
3. Sub-floor for the pool deck going in. We are suspending the stirrups in the footing holes, which will be filled with concrete later.