bear repellent

I don't recall visiting a national park where they wrote in brochure to watch out for hunters, they usually have instructions to watch out for wildlife, fire, avalanches etc .. but not hunters

OK. And what is your point?
I don't recall staying at a hotel where they wrote on my bill to watch out for prostitutes in the lounge.
They usually have instructions on the bar, fire routes and checkout times, but not prostitutes in the lounge.
 
Is it easier to find someone in national park where they already have a team of rangers or in some random remote crown land ?

Depends how remote. Most national parks don't have much staff to start with but for crown land there may be a town a couple dozen km away with a police force, search and rescue teams, and a pool of possible volunteers.
 
Is it easier to find someone in national park where they already have a team of rangers or in some random remote crown land ?

If you are so worried about getting lost or in need of help get yourself a Sat phone and a GPS so you can tell who ever wants to help where exactly you are . You can also get one of those emergency beacon thingys that send out a signal to tell the authorities that you are in need of help . That signal will lead them right to you .

Had to call for help a few years ago . One guy was having a heart attack in camp . I used my Sat phone to call for help . They sent a helicopter to pick him up . 2 hour drive back to town . Helicopter was faster
 
It happened to me to venture in dirt road out of national park, my car wheels got stuck in a ditch and couldn't get them out. I was stuck there for few hours, no people passing by and it was a long distance to walk back. There was no phone signal at all. Eventually I was able to get the wheels out by putting some tree branches underneath. Otherwise I wouldn't know how to get out from there

Next time bring a winch.