For anyone wishing to purchase this for a large, sit-on-top kayak, let me tell you that this will work fine! I have a Malibu X-Factor (14') and for the price, I'm happy with it. You may end up dragging it loose sand, but other than that its fine. I generally try to find a boat launch if I can.
Not only is it compact, lightweight and easy to use, it fits inside my kayak, I just have to take off one wheel (which is easy to do). The price was great and then free shipping and no tax-I couldn't have found a better deal.