The way the trebble hook wire is made its too long; the Crystal treble hook shank is also to long. I've tried a few & have caught some fish with them but they need to be redesined some. It gets old having to reel up and fix the rap & it happens a lot with the vexan. I even tried a mustad triple grip treble with a shorter shank and that really didn't help much.
Some of the older Jigging Raps that I have were made with a longer wire in the middle. They corrected that issue as in my treble hook hardly hooks around my leader line.