Bah! You people and your advice!
Still can't get a second battery here in Australia so I got there 30 minutes ahead of time.
I set everything up and did a compass calibration and went through my pre-flight checklist and turned the P3 back off.
I took my mini quad out for a spin to scope the area. Rather tricky, deep gulch, road, trees and a thin power line to be careful of. OK got it.
12:32 I fire the P3 up and put it in the air. ****, bright low winter sun over the hill screwing the exposure. I have to go right down to train level to get footage, not a worry.
Find my waiting spot, hovering above the gully to the side of the track waiting for the train to come around the corner.
It does, and it's go time. I track backward and rotate on the engine, stopping when I hit perpendicular.
Capture the carriages with people hanging out the window and waving, until the last carriage where I dolly along side for a bit then sweep up a little bit, rotate and move behind the train.
With the caboose, with train guard on the back rail looking at the P3 I follow it a little way down the track until the trees and cables get too dicey.
Bring it back and get some B roll of the trestle bridge avoiding the ferns and struts.
PERFECT!
Bring her in for landing, hand catch nicely and place her gently on the ground extremely happy.
Now to hit the record button and turn the video off.... oh....
Turns out the best way to film a train, despite the good advice above, is to turn the camera ON
Oh well, next weekend it is!