Lots of things were nice Paul but here's a small tip that will help.
In both the single spey you used to change direction and then the jump roll you used for your final delivery you anchor was too far out in front of you, it needs to come further back towards to your top hand shoulder. Pull that anchor back further during the sweep so it lands level with your right shoulder and about a rods length out to your right, it was far enough out from you but could have easily came 10'-15' further back. This makes your d-loop bigger, your anchor smaller with more weight behind the rod tip to increase rod load and ultimately ease casting effort or increase distance.
The reason this is happening is that you are facing more downstream towards the dangle than across to where you intend to cast. Dont think about foot position here, God gave you your very own pointer, its directly between your hips, point it at the target you are casting towards, your hips and shoulders will then follow and then let your feel find their own comfortable place on the river bed.
Would you agree Alan, that if Paul bought the anchor back further (10-15' as you say), and faced the direction of delivery, then he would/should not need his false cast?
That Jump Roll also does not do a great deal for stealth either!
Bit like lots of false casting with a single hander only worse I would suggest as you are landing a heavy fly with a splash!
Compy, I doubt Jock is using a 13ft rod with an AFS (the easiest casting line in the world) in that video. What Springer said is correct.
Even if you are struggling to get fast tips and tungsten flies up to make your anchor you should make a roll downstream first and then into your single spey.
Hi thanks' for the tips Springer the wind that day was changing all the time so in those conditions I like keeping the flee away from my body as far as possible someone once said I need to do it this way and he hooked his waders twice while showing me But I take on board what you say awesome tool for casting in any conditions though .