Dan, the lighting of the tree is not all natural in No 1. I used an LED torch that is like a strip-light covered on one side and this gives a wide weak beam and I light painted with it, how much additional light this gave is difficult to determine. It would have been ideal to be there much earlier so that I could have experimented with lighting the tree.
For info, here's my first shot taken on arrival 1 hr 3 mins before sunrise, 15 mins before No 1. Only ambient light and ppd, not a keeper.
For No 3 I had been hoping that the tide would have reached the tree earlier so that the light would have allowed a long exposure on the water and I had not bought my NDs along