Well, having ambushed the muntjac several times over the last few days I thought I'd give it another go this morning.
As expected, at around 06:45 the mature buck appeared by the wood on the far side of the cover crop field:
With the dogs tied up I got myself ready and crouched down by the side of the track so that I could follow is progress without being too obvious.
He came nicely across the field almost straight towards me, only scarpering when he finally saw me move.
These are in the exact sequence in which they were taken, so hopefully give an idea of how he progressed across the field.
I also think the demonstrate how (a) drab clothes work as well as any camo, (b) having you hands and face covered reduces the chance of spooking deer, and (c) movement is the enemy of concealment!