Ya, I was just asking this question in regards to the PPS-Pro method, but I have decided to stick with the EI method as I am comfortable with it.

I will just stick to tsp measurements as it is much easier and quicker, so problem solved.

On a side note/ off topic :
Tom,

I am getting to that stage where my career interests are starting to narrow down to marine biology, environmental engineering, and the likes. I was just wondering what classes I should be taking to achieve that goal. I think what you do is great, as it is something you like and its not your typical desk job.

thanks