This was excellent advice you were given here: http://www.gwtwforum.com/index.php?topic=3090.0
I would maybe add when you throw your hands forward do it fast
. You can also take a step forward at the same time. Remember you are trying to create slack
in your lines so the kite can lay back. Some kites are just plain harder to do than others. I don't think adding a tail weight will help. Yes, that was a roll-up/YoYo. So, practice-practice-practice. If you can do it with one kite you will soon be able to do it with all your kites.