In one example, a method includes positioning a tool in a mold, forming a parison of melted plastic, closing the mold around the parison and tool such that part of the tool is positioned between a portion of the mold and the parison, creating a blow molded structure by inflating the parison so that the melted plastic comes into contact with an interior portion of the mold and into contact with the tool, and after the mold is closed, operating the tool to form an integral compression molded element within the mold, and a parting line formed by the mold in the blow molded structure forms no part of the integral compression molded element.

In one example, a method includes positioning a tool in a mold, forming a parison of melted plastic, closing the mold around the parison and tool such that part of the tool is positioned between a portion of the mold and the parison, creating a blow molded structure by inflating the parison so that the melted plastic comes into contact with an interior portion of the mold and into contact with the tool, and after the mold is closed, operating the tool to form an integral compression molded element within the mold, and a parting line formed by the mold in the blow molded structure forms no part of the integral compression molded element.

A break resistant composite stringer system for a sports board includes an elongated stringer body. An upper U channel is fibrous and includes an upper U channel right flange and an upper U channel left flange. The upper U channel right flange is vertically oriented and the upper U channel left flange is vertically oriented. An inside surface of the upper U channel is bonded to the stringer right surface, the stringer top surface, and the stringer left surface. A lower U channel is fibrous and includes a lower U channel right flange and a lower U channel left flange. The lower U channel right flange is vertically oriented and the lower U channel left flange is vertically oriented. An inside surface of the lower U channel is bonded to the stringer right surface, the stringer bottom surface, and the stringer left surface.

A package delivery system includes a package delivery computing system having a server with a processor and a server storage device. Driver cell phones includes a first driver cell phone. The first driver cell phone has a driver cell phone camera, a GPS receiver and a wireless data transceiver. The GPS receiver receives a first driver GPS location and transmits it to the server. A machine readable code is affixed to a first package that corresponds to a package #1 ID, a package #1 destination latitude GPS coordinate, a package #1 destination longitude GPS coordinate, and a package #1 size unit on the server storage device. The driver cell phone is configured to read the machine readable code via the driver cell phone camera and the driver cell phone communicates with the server over a network.

An apparatus for viewing marine life is disclosed. The apparatus includes a board configured to float on water and a window positioned in an opening in the board. The opening in a front end of the board and the window includes a transparent top portion, a transparent bottom pane and sides forming a center void. The window is sealed to prevent water from entering the void and the window includes a bottom lip planar with the transparent bottom pane. The apparatus includes a seal positioned in a gap between the window and the opening in the board and above the lip. The seal is inserted from a top surface of the board and provides a friction fit between the window and the opening. The seal includes a flexible resilient material and sized for a friction fit between the opening and the window to prevent movement of the window.

An apparatus for viewing marine life is disclosed. The apparatus includes a board configured to float on water and a window positioned in an opening in the board. The opening in a front end of the board and the window includes a transparent top portion, a transparent bottom pane and sides forming a center void. The window is sealed to prevent water from entering the void and the window includes a bottom lip planar with the transparent bottom pane. The apparatus includes a seal positioned in a gap between the window and the opening in the board and above the lip. The seal is inserted from a top surface of the board and provides a friction fit between the window and the opening. The seal includes a flexible resilient material and sized for a friction fit between the opening and the window to prevent movement of the window.

A board suitable for riding a wave is described. The board includes interconnected deck and bottom reinforcing zones.

Surfboards may have at least one structural layer disposed between a foam core and fiberglass layers. The at least one structural layer may strengthen the surfboard as compared against surfboard without such a structural layer. The at least one structural layer may minimize and/or prevent overheating of the surfboard from sunlight exposure and/or from excessive heat. Surfboards may have at least one heat-release-valve installed within the given surfboard. The at least one heat-release-valve may minimize and/or prevent overheating of the surfboard from sunlight exposure and/or from excessive heat. Surfboards may have at least one structural layer disposed between a foam core and fiberglass layers and surfboards may have at least one heat-release-valve installed within the given surfboard.

Surfboards may have at least one structural layer disposed between a foam core and fiberglass layers. The at least one structural layer may strengthen the surfboard as compared against surfboard without such a structural layer. The at least one structural layer may minimize and/or prevent overheating of the surfboard from sunlight exposure and/or from excessive heat. Surfboards may have at least one heat-release-valve installed within the given surfboard. The at least one heat-release-valve may minimize and/or prevent overheating of the surfboard from sunlight exposure and/or from excessive heat. Surfboards may have at least one structural layer disposed between a foam core and fiberglass layers and surfboards may have at least one heat-release-valve installed within the given surfboard.

In one example, a method includes positioning, within a mold, a device with a movable element that defines a portion of a volume, and the volume is contained within the mold, as part of a molding process, at least partly defining a molded watercraft by introducing plastic into the mold, disposing the plastic about the movable element, and with the movable element, excluding the plastic from the portion of the volume that is defined by the movable element so as to define a recess and an undercut that are integral with the watercraft and extend lengthwise with respect to a centerline of the watercraft, and the recess and undercut are integral, and communicate, with each other.