Just bought a new pair of neoprene boots for the sand dunes of Cape Cod's shoreline this season. $30 at Eastern Mountain Sports, made by Northwest River Supplies.
They have copious tread soles and thin 2mm neoprene uppers with the gussetted zipper and a velcro keeper strap.
BTW - Saturday the 28th is CLUB day at EMS, 20% off anything in the store for members of a club. Bring the Forum hat and buy a kayak at nearly $100 off! I am going to buy a GPS unit if I am not down the cape chasing stripers.