I don't do as much with horses as I used to - my heath is broken. However, I do have my gelding and at least help with my daughter's filly.
Here is what I have learned so far this year.
1) Lying down a horse without a fight is much easier than I could have imagined. In another post, a youtube video showed a trainer using give and take to lay down a horse without traumatizing it. I did some searches and watched about a dozen different videos. Then, for no real reason, I picked up my gelding's leg and pulled him to the ground. It was so easy I can't believe it. He didn't struggle or anything. He just sort of looked at me like I was weird. (and stepped on my foot when he finally got up)
2) I have remembered that join-up is really hard. Teaching my daughter to get a join-up with her filly has reminded me how long it took me to learn, even though the person who taught me was Monty Roberts.
3) I have also learned that when you take a mostly wild two year old and tie them in a two horse trailer when they have never been tied before - it is interesting... When you then get stuck in Seattle rush hour traffic with said filly in the trailer expanding the three hour drive to just under six hours, she leaves dents in the sides of the trailer. When you finally get her home, she would rather die than pull back on the leadline! I have never had a mostly wild horse be so easy to lead or tie... not that I think I ever want to repeat the trailering experience, but boy I like the results!