There has been a bit of chat about this new Nubster from Sean Mattison from Von Sol surfboards. Slater has been loving it....
i've been using the nubster on & off while now, seems to give a bit more hold when you need it without compromising looseness.win/win.
Shapers now have a nubster called the "Darc Drive" Fibreglass unlike the plastic fcs nubster. Would look good in your shapers quad setup you have riverider