I came across this site a year ago, and had not been back for a while, but a Facebook post by Derrick Mayoleth the blogger/kayaker prompted me to return and check it out.
Derrick is not just an avid paddler he is also a great photographer, many of his images are available for viewing on his Flickr photostream His site has a bunch of useful links to products and resources about rolling and paddling in general, not forgetting his blog which makes interesting reading. Check it out sometime.