Make your dinghy better than an inflatable boat!

http://www.dinghydogs.com/

EASY DO-IT-YOURSELF INSTALLATION

Dinghy Dogs® consist of basically three parts. (1) A set of tracks for
each side, (2) two inflatable bladders, and (3) covers to protect the
bladders and provide a means of attachment to the boat.

What they do is convert almost any hard dinghy into a very stable
tender, without giving up the rowability of a rigid boat. Basically
it's a kit to attach flotation bags to any 7-8 foot dinghy. What you
wind up with is a rigid boat with flotation that won't sink if
punctured and costs far less than an inflatable with a hard bottom.