The Edgefast Hidden fastener tool works for PVC and most wood square edge decking. You place it once, and shoot twice, securing two boards to the joist at either 0, 1/8" 3/16" or 1/4" gaps.
HIDfast works with all wood, composite and PVC deck boards and is compatible with solid, grooved and tongue/grooved variations.
The Joist Attachment can adjust to work with almost all pre-grooved decking
The Attachment can adjust in very fine increments.