I'm going to be putting up a 3 board fence around my pasture in the spring and need a few questions answered. First what spacing from the ground to the top rail should I use? I was going to use 16ft 2x6, do I need to put a post every 8ft or can I go the full 16ft? I will be putting an electric ribbon along the top of the fence also. Should I put the posts on the inside or outside of the pen? I like the look of it inside better but not sure if it would be safe for the horses. Well I think that is enough questions for today, thanks for any help.