Had a 12 year old abort last winter. Gave her another chance and vet confirmed pregnant. Two weeks ago she aborted again (due in February). Lesson learned. At least for a cow that age. Vacinated for lepto before breeding.
Ran it through a structural design program. Assuming that the primary failure is the corner post pulling out of the ground, it does not really make much of a difference whether you put the brace high or in the middle. To prevent the corner from pulling out the best thing you can do is make...