There is the old saying that in the American legal system it is better that 1000 guilty people go free than one innocent person be wrongly imprisioned. I think thata similarphilosophy should apply here. If requiring search warrants to enter private lands makes it much more difficult for game wardens to do their jobs, then so be it. I would prefer to err on the side of civil liberties.
Exactly Lanse! Let em get a warrant. If there's a real reason, they can get one just like they need for your home. Maybe the standard doesnt need to be as high for open land but a warrant or probable cause should be required.