
Now, Double Pulley is a hard trick, i'll take you through it step by step;
1. Drape string over the top of the yo-yo hand thumb
2. Pull down the string between the middle and thumb fingers on the yo-yo hand with the thumb of your non-yoyo hand.
Tip #1: on the non yo-yo hand, keep the string on the nail part of your thumb.
3. Land the string between the 2 fingers on the yo-yo hand. You should be in the under or bottom mount but over your non yo-yo hand thumb nail.
Tip #2: for the next step, for less mental aggrivation while learning this trick, use your ring or pinky finger.
4. While in the under or bottom mount, grab the string with any of the other fingers on the non-yo-yo hand.
5. Pull yo-yo hand down, flip the yo-yo over the top and land it into a over mount.
6. flip into a under mount, and do a farris wheel dismount.
I hope This helps, it helped me!