One of the best (only?) things you can do is write your Congressman and your Senator about public lands staying in federal hands. Having said that, if I was sure the state would not sell the lands, I'd be more for state ownership than federal (sorry). I spent nearly 30 years in state agency wildlife management (IN, KS, MO, and KY). Public lands were PRECIOUS and rare in three of those states (not so much MO) and we would do anything to obtain more and keep it for hunters.
I am concerned about this, especially for the West where I like to visit my (and your) lands from time to time for a 7-10 days.
Back to the thread:
I've hunted private land most of my life until just about 6 years ago when a local fellow was leasing up land to outfit hunts. My landowner wouldn't have kicked me and my son off but I could tell he wanted a bit of "help". So I offered to pay annual property taxes ($1,500 year - 135 acres). I wrote a lease (web search) that at least addressed liability and my accepting of same. I found a way to buy the land this past summer.
I've always found it pretty easy to get private permission EXCEPT in Kansas. In IN, MO, and KY it was to my advantage that I was a biologist. It was not in Kansas. One summer I used plat maps and several days of driving an hour out from Newton to knock on doors. Met a bunch of very nice landowners. Some even seemed tickled (??) that I was knocking on doors) I was turned down by every single landowner when I asked permission to bow hunt deer. Most already had their land leased, some only for birds but still would allow no deer hunting because their lessee wanted exclusivity.
I remember one ranch had a pile of shed antlers laying right out in the open next to the house. Teasing?
I've been kicked off of two private tracts, one in Indiana and one in Kentucky. Both times I objected to another's hunter violation of game laws. In one case the hunter was cited (Indiana around Potato Creek SP) and in KY I just had to "remind" another hunter of the proper harvest reporting requirements. Neither landowner appreciated my input. But, I could not look the other way.