I'm glad you posted this since I have a huge HLWS at my other house and wanted to move it but didn't. I can't reproduce the growing conditions it favored and moving one that big would probably kill it.
I do have a curly willow over there also and could try rooting the both. I read that adding willow to a vase will help other slips start the rooting process.

Well I have never had luck rooting anything, so I am thrilled! Good luck & I hope yours roots as well. Just don't change the water once rooting starts.

I'll report back hopefully with success. Guess I have to get the willow rooting first to get that natural plant hormone in the water. Right? Then add the HLWS?

That's the way I did it - accidentally :)