dg-steepan2198114wrote a review of Ocean Kayak Scupper Stoppers - 2 pieces on May 21, 2009
These things are a great idea but the implementation sucks. The plugs have two drawbacks.
1. The seam line is inline with the pull string. you can rip the string out tearing the hole.
2. They MELT! That is right! If you have them in say your zip bag on your seat and your seat back gets hot from the sun (Imagine that). They loose their form and don't work. Now I am not saying they melt in your hand like chocolate but if they are in your car or some other place where it gets hot don't count on them lasting too long.
If you can keep them from melting or tearing they do the job and work great!