I have built fence with both the " H " style and the " N " style, and the experience I have had is the " H " type is better if it is cross wire braced properly! The Corner posts and the Second Post should be set at least 4' to 5' deep and preferably in concrete. The "Brace" pole or bar should be notched about 6" to 8" below the TOP of the two posts (which should be the same height from the ground) and THEN two brace wires should be attached in an " X " manner - one from the TOP of the Corner Post to the BOTTOM of the Second Post, and another brace wire attached from the BOTTOM of the Corner Post to the TOP of the Second Post - both brace wires tightened ONLY SNUGGLY - NOT as tightly as they can be made to 'twang'or 'sing'. This is to allow for tension being applied to the fence wire when stretching. After stretching, return to the corner and EQUALIZE the tension on the cross brace wires, but still not so tight that you break the wire. After a few weeks, return and check the brace wire tension. This technique takes a little extra time, but it is well worth the effort. The "Snug Only" method allows for temperature expansion and contraction. If you are driving staples into wooden posts - DO NOT DRIVE THE STAPLES ALL THE WAY INTO THE POSTS! Leave enough space between staple and wire for the fence wire to move by the staples in changing temperatures, otherwise they can pull the LINE posts right out of the ground - or - break the fence wire or pull the staples out of the posts.
The "Physics" Laws of Leverage apply in this situation - the fence wire (either barbed wire strands or woven wire fencing or both) acting as the Force or Weight, - the Corner Post , The HORIZONTAL Brace Post and the Second Post acting as the Resistance with the Fulcrum being at the point where the Fence Posts meet the ground at the Post holes and the Brace Wires acting as an aid to balancing the Resistance. The ULTIMATE Power resistance occurs at the extreme BOTTOM of the Corner Post and the Second Post at the BOTTOM of the post holes , CROSS-TRANSFERRING the resistance through the brace wires. The same type of construction should be incorporated within the fence line itself with THREE larger posts and TWO brace poles and wire braces about every 100 yards (or length of a football field). Makes a heck of a fence and precludes a lot of work later when riding the fence line! Saves money too, - down the line!
DOC HARRIS