All of my best properties came from small properties. This is my method for access:
I put an ad on Craigslist, put my phone number on it, and a little bit of personal info. The headline reads "got coyotes", and I post it in the fsrm and garden sale section with the farm implements and goats. I explain in about 2 sentences that if someone has coyote trouble to call or text my number, and I will attempt to help. Most of my calls come from smaller farms, 50-200acres. I go to the area, befriend that person and make an honest attempt or two to hunt coyotes there, even though I know that they aren't there. Then I'll do some locating and find the patch or patches where they are. I'll then explain to the initial contact that I've found where they are hanging out and using on-x, I'll know the landowner's names. Several times they've picked up the phone and gotten me the access themselves, but if they don't offer to, I go to them and knock on the door. I explain that I had gotten a call from the widow white down the road who has had coyotes eating the cats off of her porch, (or whatever caused the initial call), and ask very respectfully if I might be allowed to slip into their patch of ground and make an effort to kill them. Then I can just continue that process. Once you have a few local landowners who have granted you access for this purpose, nobody tells me no. I have a couple of areas that I hunt in where I've had people leave notes on my truck, flag me down in the road, or even go as far as acquiring my phone number from one of the people who gave me access, and reach out to me to ask if I will also come and remove coyotes for them. I send a few dead coyote pics to the landowners periodically, and if I get a couple on say Saturday morning, I might make a lap around visiting and show off the fur to the landowners. Most of them really enjoy seeing the success. It works for me. It is a very non-confrontational way to approach people about access. So, I go to every call, whether they have 10,000 acres or 10 acres, and then start networking.