Should you use scupper plugs?

Scupper plugs are only applicable for kayaks that have scupper holes. Without scupper holes, there is simply no need for scupper plugs. It's important to remember that scupper holes are included in sit on top kayaks for a reason. They are an important safety feature and highly recommended for beginner kayakers.

What is the point of scupper holes?

Scuppers or scupper holes are openings found on the side walls of kayaks or any open-air boat (structure) to help drain off water. Typically, scupper holes are positioned at or near the ground level, allowing water or liquids to flow off to the side of the kayak, instead of pooling in the side walls of the craft.