At least tag me properly if you are obsessed with a response. It takes time to read things, have a doctor's appointment, go to lunch, and do some actual work. Plus you said this back and forth is pointless. I see that you are using other's people's links and not providing your own, but I'm not surprised.
The Pickle case was reversed and remanded to the lower court, i.e. the game cop was in the wrong. This has to do with felon in possession of a firearm and possession of methamphetamine. The reason those charges came about was due to an administrative inquiry to check hunting license and shotgun plug check. As far as the warden going into bags as described, we don't know if he had verbal consent because that wasn't a consideration. I write that to say I never said a game warden can't approach you and check your hunting/fishing license. In fact, I stated they can make a traffic stop if state statute allows and also conduct game check stations to check your license and demand game in your possession. They can check the plug in your shotgun and draw weight on your bow. Those are certainly different than searching a vehicle, your person, coolers, or backpack with no probable cause.
As far as a brief from 1985, it holds no bearing in today's world due to more up to date decisions. Since 1985 states like WY have a constitutional right to hunt and fish. Also, decisions in the 10th Circuit, specifically Gant Vs Arizona limited search incident to arrest. Search incident to arrest was specifically noted in the 1985 brief. On a side note, the Wyoming law that is quoted in the 1985 brief requires PROBABLE CAUSE to search. I never got back to the VA law that was mentioned in the brief.
This case is interesting. It was referenced in the Pickle decision and had to deal with safety checks, i.e. administrative investigations, from Arkansas GF. Spoiler alert, the Arkansas GF violated the 4th Amendment.
https://caselaw.findlaw.com/court/ar-supreme-court/1623125.html