Hi kennyso - I just read your post in my poor jade thread. I do pretty much the same as TK with the leaves. You need to let the ends dry out - I usually let them dry for a day or so, so a callous can form. Then I just put them on top of fresh soil, or back on the soil in the mamma
plant - I push the end into the soil just the teeniest bit. They don't all sprout for me, and it does take quite some time, but it's so rewarding to see the babies sprout when you least expect it.
Just took these pictures now, of various stages of sprouts in the bottom of my mamma
plant pot. If you look at the far left, you can see itty bitty babies just
growing out of the leaves.
The leaf will die off once the babies are big enough to live on their own.