Don’t tie your horse to random things. Tying your horse and teaching patience is one of the most important skills a horse must have, but please only tie to sturdy solid horse rated tying spaces.
I have seen horses seriously injured by being tied to things that can not withstand a 1000+ pound animal pull back. Often then your horse is attached to said broken item and running around like a maniac. The ground work and work I do helps prepare a horse to be ok if something did happen but save your self the risk of really hurting your horse and other innocent bystanders.
This helps your horse in so many ways. Seriously consider with fore thought what is strong enough to hold your horse if their is an issue while they are tied. That Wooden log that you might think is strong in reality might not be strong enough for your horse. The idea in my mind is yes my horse is so well behaved I could hypothetically tie them to anything and they follow pressure and never pull back in a perfect world. Remember that teaching them to follow the lead rope with there feet from tip number one sets your horse up for success, if your horse never thinks it’s ok to put tension in your lead rope then it will also apply when tied. When I do other ground work with a flag tarp or pull things around is another way we help prepare a horse for incidences like something being drug attached to a lead rope. I debated the grousom image but this was a horse that was tied to a not secured metal gate.