I used to use a 12d nail to space decking. No good, that leaves holes in the framing. Next were wood rippings. They would fall through the gaps. Now I have this wonderful invention that makes spacing so easy. I install Azek PVC primarily, but I am sure that they will work just fine with any kind of decking. Kudos to Kreg to come up with all the cool products that they do, and for Rockler to carry them.