Cafrhe's right. You have to plan on having a nice on-going battle with Lester. It will wear you out, but that's what you need to do to him - wear him out, outlast him.
The video was very helpful. You aren't exactly showing fear, but you aren't exactly sure of yourself, either. Lester is like most roosters who lack the self confidence to do much more than attack you from behind, and make no mistake, he's attacking you when he runs up behind you and stomps his feet. And he is always alert for an opening to jump on your back. When he does that, he's won a round. Don't let him do that! Don't turn your back on the little coward!
But, it's now time for the worm to turn. You need to practice so you can be ready to swoop down on him with your hands and scoop him up. It's a matter of timing. Try to judge when he'll be close enough and be already starting your move. Roosters are at their most vulnerable (easiest to catch) when they're coming in to flog you. It's sort of like playing catch. In fact, you can brush up your rooster catching skills by playing catch the ball with your husband. You basically, in a single motion, swing your hands down as if to catch a baseball grounder just as Lester runs in.
Most of my roosters were sweetie pies, but my first one, a SLW named Stan, was a challenge. Every single day of his life, which lasted less than two years, we had boxing matches and he would get carried around. Finally, I wore him down and he became docile and sweet, and even let me pick him up and snuggle him. He actually enjoyed it. But those hormones kept him on his toes for the first 18 months, he he just wouldn't give up.
When a cockerel behaves like Lester does, it means he doesn't trust you to deal with the flock. He thinks he has to do all the work because you don't seem to know what you're doing. You need to practice your body language because roosters are expert at reading it. In law enforcement, which I was in before I retired, we called it "command presence". You need to practice acting like you know where you're going, what you're doing, and who you are at all times. If you do it right, people will come up to you in the grocery store and ask you where stuff is because you look and act like you know where everything is.
That's exactly what Lester is looking for from you. If you can learn to give him that, he will learn to trust you and start ignoring you as he does your husband. It requires not only the right state of mind, but careful, precise, decisive actions. Command presence.
