So I know there are a few people on here who use google earth to find mud. Just wondering how you go about that. Do you basicly just look around until you find something that looks promising? Are there filters available to look for wet areas? I feel it could be a very useful tool. Also is there a way to know if the area is private or public land?

Well, google maps is one way to do it, but if you really want already-marked wetlands, you might be interested in GIS data:

https://www.fws.gov/wetlands/data/data-download.html

Or for the online mapping tool:

https://www.fws.gov/wetlands/Data/Mapper.html

If you take a look at the legend, it can show you different types of wetlands, which can inform your search.