Joe A.wrote a review of Ocean Kayak Scupper Stoppers - 2 Pack on April 20, 2011
I have a Mainstream Twist kayak, not a very common model. I wasn't sure what size stoppers I needed, so I was referred to someone at Ocean Kayak who said that the small (yellow) stoppers would fit. Unfortunately, they seem to be too small, as they protrude beyond the bottoms of the scupper holes and leak when I get in the kayak. I guess I should try the medium (blue) stoppers. I just don't know if it's worth the hassle and expense of exchanging them.