I'd be more worried about safety. Cattle can be dangerous when they don't know you - most are not, just enough to make you forget to be careful. If you damage anything you are in trouble for it.

That said, if you can find the land owner most will be willing to give you permission and warn you about hazards to worry about. Figure out how to do it right and for free - with a good insurance that you won't harm their land and you will have more work where you can get permission than you lifetime will allow you to fix.