Thank for that Gavin that helps heaps.
I'm setting up the CPC ranges on Sketch up along with all the obstacles and targets. For those who are geeks like me you'll be able to design sweet as stages.
If you want to have a look download google sketch up from here:
http://www.google.com/sketchup/download/(click on the free version bottom right)
Then check out the attached files.
1st one is both ranges with some obstacle in the middle to use. You'll have to copy and paste these to get enough.
2nd file is a stage I've set up. (pics included)
On my next visit to the range I'll note down everything we have so far and add them into the programme.
The cool thing about this is you can even set up walk throughs (see pic 3) to check out every possible angle.
Enjoy