Interesting use case! I'm curious, have you given the Segment Anything Models a try for this? I'm curious if the resolution would work to capture the soil condition and the scale you're looking at? Here is the link to the SAM tools if you haven't seen them before... https://www.arcgis.com/home/item.html?id=9b67b441f29f4ce6810979f5f0667ebe
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