Synthetic is a man made trout. You should read the book, its a good read. There are many anglers, myself included that will only fish for wild/native trout. I say wild because browns and rainbows aren't native to the eastern united states as im sure you know. It's just what i like, it floats my line.
I will attempt a video on the hand whip for you. I think if i use white thread, and color it with a marker, so its sectioned you could better understand.
I hand whip all the time, I used to use a tool, I like you wanted to know how to do it by hand, I learned and hid my tool so i forced myself to master it. Now i dont even know where the tool is lol. And i actually prefer the hand whip. Your hands are the greatest tools you will ever have.