Agree with Non PC Plod - you shouldn't be doing EOLs to an unrecced or non-approved area - that is just asking for trouble when you suddenly discover the ground is boggy or full of holes or on a bigger slope than it looked from height.
1. You cannot land without the landowners permission, so you would need to find and pre-arrange a suitable site.
"Shouldn't" and "cannot" are two different things. Which is it?