Ok - if they are not willing for a "Driving range" how about an option to "replay" your shot (only in a practice round) This way you could try different methods or even different clubs to see the results.
I have seen by some of the posts that say to use the practice round hit your drive and then quit and start again for the same shot. I feel that is a waste of time. But.....allowing me to replay the shot with either the same club or one that is already in my bag would work out as well or better than a driving range. (If WGT were really creative, they would let me change what is in my bag for another set to really compare clubs.
Something to think about...