It has been never clear why there has been so little wild hog activity at the preserve.
This is not a complaint, just an observation.
It may be that the property is surrounded by so many residents and their barking dogs, which may be a deterrent.
The site also appears to be visited by coyotes, so that may take care of the problem.
I have not found any evidence of rooting. All I've seen are tracks.
ADDENDUM: Spoke with a neighboring property owner and learned the tracks belong to some Pot-bellied Pigs that someone released recently.