Greenfield Mushroom Anchor - Greenfield cast iron mushroom anchors meet basic anchor requirements and store easily. Mushrooms perform well for small craft, Personal Water Craft (PWC), Canoes or Kayaks, or as second anchor on larger boats. Mushrooms are also perfect as a drag anchor for fishing in current, or for holding small buoys and markers. Compact DesignCast IronRecommended in soft conditions for light duty