My first time flying a Diamond Dust
Thats one thing about the Dust I like, It can slow down pretty slow.
My first one I had an OS 46 FX on it and it was loads of fun even putting around it still was stable. It also lands so easy too with nose up just floats on in.
As for launching it should just yank out of your hand. Also tell them not to shove it or give it a push when they launch it. I found it causes it to go a bit squirrly and takes more time to recover.
Just aim up a little and to right and nail it, let go and it just yank right out of your hand. These things jump up in speed pretty quick as it is.