In bumper pole news, here is my mk1 template which I just finished:
It's not beautiful but it appears to do the trick. Spot the obvious error though...
I made it by fitting the pole to the bumper bar with the bumper skin removed. I put the acrylic on top and marked the points where it would be secured, and marked the point where the tip of the pole would be. I drilled the marks, removed the pole from the bar and fitted the bar in the skin. I've used nuts and long bolts to secure the template, on the next iteration I will use washers as shims to get it sitting perpendicular to the surface of the bumper bar.
Just need to measure the diameter of the bumper pole outer housing and buy a suitable hole saw, then I should be ready for the moment of truth
Ideally I'd like to get this all done tomorrow, will have to see how that pans out...