I know that some cavers at times offer to take a landowner caving. Have you ever taken an owner surveying? I know it may not be practical very often, but I've recently found it to be quite rewarding. On two occasions I've brought the landowner along to survey their small caves. I explain the basics, and try to include them in the process by giving them the laser, or one end of the tape. In one case the owner held tape for the first two shots before the passage got too little to suit him. It wasn't much, but he was tickled pink when I gave him a finished map with his own name on it. I think it's worth trying regularly. If the survey is a big one, could the owner come along just once for some easy passage? In my case, the good will established with these gentlemen was astounding. One has been scouring his property since my visit, trying to find another sink with a hole that I can fit in. The other just today sent me an email to thank me.
Since the caves in my area are less than impressive, I've been searching for ways to enhance the experience. This has certainly been one of them.