I came across the following tool used for training the arm and upper body positions. It's called the Pole Position. Here's the URL:
http://skipoleposition.com/racing-training/
Here's the video:
Is this of any use for PMTS? I find it quite interesting, especially for video analysis. But I also think it is a bit counter productive for PMTS (just my feeling, might be wrong). I would love to hear your thoughts on this.
PS. I also find the price outrageous. A simple elastic rope would do the trick I think.