You made a claim in affect that states the PGC may enter your land without probable cause.That makes no sense.Your Topic is "Property owners and PGC laws collide".Show us the collision by posting the code that conflits with your perception of State Regs.

What does make sense if hunting on a WMA you can be stopped while walking,driving etc....On private property there must be probable cause to enter. Very similar laws apply to fishing and being stopped by any number of law enforcement agencys,form F&W,marine police,Coast Gaurd etc....
If you have your own private pond/lake you are still subject to some state regs.

Now - if your saying the PGC has all these rights to enter your property you need to post the reg/code.I'm puzzled as to how PA/PGC could be violating or negating all these rights under the U.S. constitution.