I picked up an Anchor Buddy today at the boat show for $25. One of the guys we run with in SE Alaska uses one of these things for deer hunting and it works great. He drops anchor with this bunge cord attached to it a little ways offshore and then pulls into the beach and jumps off with a rope from the stern, tying it around a tree to hold the boat while they offload. Then he unties the rope and the bunge cord pulls the boat back out away from the beach. When they get back they yard on the rope and haul the boat back over to the beach...super slick and no need for a dingy.
Here's a link to see how it works
http://greenfieldproducts.com/AnchorBuddy.aspx