Kayak Scupper hole one way plug

This is a Scupper hole plug to keep water from coming into the sit-on-top kayak from the scupper holes. These are printed in flexible filament to allow for a tight flexible fit. 

to assemble put the ball into the plug and glue on the grill on the bottom. I used flexible glue. after drying I glued the assembly into the scupper holes from the top. grill facing down.

This worked very well not much if any water came into the Kayak from the scupper holes any water that came in from wave splashing and paddle drip was drained out.