The FCS SUP Handle Can be installed pre-glass or post glass,Includes two die cut installation covers  to keep resin out. The FCS SUP Handle has an option to install a vent plug inside.

The threaded unfinished hole at the bottom, you can ether drill out for a vent plug or leave it if you do not wish too.

The FCS SUP Handle was designed specifically for Stand Up Paddle boards

Vent plug "Sold Separately"