The way you young fellas are going to get a place to hunt isn't easy but it helps if you know how to talk to them, in their language. Be aware of the challenges and the pitfalls they face daily. Respect them and what they own. Always close gates. When you look at the ranch, the older that the buildings are, how old and how fancy the pick-ups are, the better chance you have of gaining access. Look to see how big their corrals are, count horses and four wheelers. That's a good indicator of how much land he controls.
If you know where you would like to go, order the topo maps from USGS to see what the lay of the land is. Also get a plat map of the Cty you wish to hunt and then you will see who owns what. When looking over areas stop at the BLM offices and inquire. Go to farm and feed stores and inquire there.
Also when you go to ranch and ask it not a good idea to try to interrupt their work to talk to them.
And when you go out there, wear big boy pants, don't wear the bright colored tennis shoes, no colored hair, all piercings should be removed, shed the Stanley cup t shirt, and replace that New York baseball cap with a John Deere hat or a seed corn hat. And no beer cans in your hand or on the dash.
He already has you pegged for a dude, don't advertise how much of a dude you really are.
You may think this is totally over the top, but look at it this way. What would you do if this old pickup, pulling a horse trailer, drove up on your lawn, got out wearing cowboy hat and boots, pistol on his hip and started asking questions about your place. Then he asked you if he can tie his horse up in your yard to give him a couple days rest.
"There's Your Sign"