If I had gated property, it would have an automatic opener with a remote, that way it stays closed, home or away. Combined with a camera and instant phone alert with automatic pictures from the induction sensor. But yes, the automatic opener are easily defeated unless you put in extra effort installing them, ie: hardened pin with a lock instead of a clevis pin. Though that can be defeated in fifteen seconds with a cordless grinder with cut off. Locks & gates keep honest people honest. If you have that much trouble, security/monitoring system with cell phone notification would be best, and if you're shop is on the same property, that will give you notice enough to approach as necessary. An auto aiming turret weapon with a paintball gun would be a great deterrent. (This property protected against unauthorized entry by automatic defense system!) Or automatic spike strips that activate when/after the gate is breached, preventing people from leaving once they enter! Just some thought food.
