How high should a fence be?
Typically, 10′ fencing material does a great job. The forest and brush should be cleared back away from the fence ten feet on each side. Deer are fence walkers and will wear a path along its perimeter looking for passage. Any space under the bottom wire gets exploited. Deer would rather go under a fence than over it. Penetration points in a well-designed and installed fence are usually the gates that were left open.