The kayak cart is the perfect compliment to the kayak I purchased from y'all as a Christmas gift for my son. It solved the problem of accessing the lake. It was okay going downhill, but uphill was a bear.
I have an Old Town tandem kayak and the cart fit like a glove. It was very easy to put on and take off and works well moving the kayak around. Pneumatic tires would probably work better when using the cart on uneven or lumpy ground, but overall a very good product and easy to stow behind the rear seat.
We have 2 LL Bean 10' Manatees and were advised that this cart would work. It does not - the kayak slid off on a slight decline and I imagine it wouldn't perform on rough terrain either. It is designed for longer kayaks and although there are directions for using it for 10 footers, it does not work well. We returned it.