The Kanda-Hart- Start with a breakaway, then undercut the yoyo. At the same time, with your throw hand, toss back a slack loop over your pointer finger. Now unwind the yoyo from the under cut. Just as it is released from the undercut, throw the slack loop (while keeping your pointer finger inside the loop) over the string segments/away from you and onto the yoyo.
To return, drop the segment on your right pointer finger, unwind one string layer with your throw hand and you end up in a classic bind. Pull throw hand and release left segments and celebrate the landing of a cool trick. Cake or Pie works, I personally go with Cheesecake.
The hardest part is getting the slack loop OVER the string segments/AWAY from you so it lands on the far side/away side of the yoyo.
There are no possible knots from this trick, but I do not recommend dropping the segments on your left hand and right at the same time, or your yoyo will snag and hit your fingers. One segment at a time will suffice if you want to simplify things on.