There are many factors to consider when choosing the right cart for your situation, but I'll be brief. In the past there has been some discussion on the stress induced on the scupper area while using a "plug-in" cart resulting in stress cracking in that area. I recall some of the recommendations included the use of a "strap-on" cart instead of the plug-in. This seemed to alleviate the issue. Enclosed is a link to the carts referenced:
http://www.kayakfishingsupplies.com/kayak-accessories/wheels
