The Monster cart might help! I use it on my fish n dive! It's not as good as the roll-easy, but you can get it for around $109 delivered! The wide wheels help cross the sand at Coast Guard Beach. I usually try to get my yak on the sidewalk asap!
www.suffolkkayak.com Argue with them for a good price! Guys name is Ed. Tell em Jerry in California sent you! ($109 delivered!) This is the cart Defjack uses! Piranha