You can't access from 51 or from Oak Grove Road - not supposed to anyway and they frown on driving around gates - ticket every time.

Pleasant Hill Road - are you talking about CR 47 that runs up by the nature center all the way out to 51 just south of Midway?

Are you accessing your lease off that very most northern road on the Miller Tract that runs along the boundary and then turns NE off the state into private property?

If your lease runs out to Pleasant Hill Rd (CR 47) you should be able to get in on that side a lot easier - assuming you aren't crossing state property to get to it.