Last year I posted a tutorial with pictures about this issue. Use the Spoon Wires and cut them all in half (doesn’t need to be exact) with a side cutters. After you put your hook into the mold, lay the wire into place with the gap in the hoop facing forward.
Where the wire meets (crosses) the hook, touch and leave a mark on the wire with a Sharpie. Remove wire, and at the mark, bend the wire 90 degrees (or a bit more) down with your pliers. Then snip off enough so that the wire sets flat against the hook and the mold closes properly.
This keeps that wire secure in the jig, unlike the WEY375 wire. After painting the jig, the swivel split ring slides on easily and a quick pinch closes the gap in the hoop.