We are in the process of adding calving pens in our barn with an attached calving yard. We currently have 5 black angus cows and are keeping the heifers for breeding. We ran into issues last year with 4’ wire fences and deep snow during calving season. Going to build all wood pens and fence in high pressure areas. Was thinking 5-6” by 9’ posts 3’ in 6’ out with board rails. 8’ post spacing with 16’ boards overlapping seams. Any suggestions welcome. Also wondering if 24’ free standing panels would work good in high pressure. Thank you.