I am needing input from some of the veterans that were paddling back when the Response came out. I am curious about this boat to be used for downriver racing in class II water. I have been told to be weary of the plastic on these boats. How big of a concern is this/ how much is a good condition one worth and what if any would be a better choice for about the same price? Also does anyone have contact info for someone who would know a lot about these style boats?