Why can’t I choose the length of tines for the POGO, so I can measure at the depth I need for the location I’m at?

Even in deep-rooted systems, the predominant exchange of moisture and salinity that the turfgrass depends on for optimal performance occurs in the top 2 to 2.5”. This is always the region you want to measure and reference against over time. By varying the depth, you will end up basing your decisions off of invalid information. An independent study has been conducted that verifies this and is available upon request.