I actually own these - I was beta tester for the company.
I love them and the data they produce. However, there’s very little use for it.
When instructors started getting this pressure information, I watched as they made the same mistakes as they have done in all other areas - shooting for pretty, symmetry etc. Many instructors defaulted (and some still do) to trying to create a linear trace, which was actually detrimental.
When you look at the top pros, their traces can be messy as hell, but in a functional way - messy is not always bad, and pretty is not always good.
There are some commonalities though - in top pros,
- the pressure will shift into the back foot as they swing back,
- There will be a drop in. lead foot pressure before they reach the top of the swing - as they are transferring their mass towards the target. YES, they are transferring MASS forwards, but pressure moves BACK during this phase
- the pressure in the lead foot will tend to peak by around lead arm parallel in the downswing, or slightly after.
- It also tend to transition into the lead ball of the foot (this helps with rotation and dynamic balance).
Apart from that, most bets are off.
I’d start with gaining an understanding of the difference between mass, pressure and center of pressure. Luckily, I wrote an article for that a few years ago - https://www.adamyounggolf.com/golf-and-cop-what-is-it/