Do a google search for PSI on a regular track and a wide track dozer (LGP tracks), then google search for PSI with a sheepsfoot roller. Let us know what the difference between the PSI is that you found.
The tracks are on the machine so it doesn't sink into soft ground. Like a snowshoe on a human. So, if it floats the machine on soft ground, it won't compact it properly.
Like I said before, either here or in another post. A bathtub holds water very, very well, but pull the plug and it doesn't hold water that well anymore.
Ponds are the same. Miss compacting an area and it's like pulling a plug in a bathtub.
