A water intake system for a boat spray gun, including a system utilizing a port through a transom of a boat, the port positioned proximate to the bottom portion of the boat; a spray gun system; and a water intake system, comprising: a first water inlet tube having a proximal end connectable to a pump of the spray gun system and a distal end connectable to a swivel; a second water inlet tube having a proximal end and a distal end, the proximal end connectable to the swivel; a port connector connectable to the distal end of the second water inlet tube, the port connector having external threads threadingly engaging the port of the boat; and a water inlet conduit having a proximal end engageable with the port connector and a distal end positioned under the bottom portion of the boat.

A water intake system for a boat spray gun, including a system utilizing a port through a transom of a boat, the port positioned proximate to the bottom portion of the boat; a spray gun system; and a water intake system, comprising: a first water inlet tube having a proximal end connectable to a pump of the spray gun system and a distal end connectable to a swivel; a second water inlet tube having a proximal end and a distal end, the proximal end connectable to the swivel; a port connector connectable to the distal end of the second water inlet tube, the port connector having external threads threadingly engaging the port of the boat; and a water inlet conduit having a proximal end engageable with the port connector and a distal end positioned under the bottom portion of the boat.

An anti-freeze water gun structure has a gun body. The gun body has a water passageway therein, a water inlet at a lower end thereof, and a water chamber between the water passageway and the water inlet. A guide tube is provided in the water chamber. A slidable piston is fitted onto the guide tube. A lower end of the guide tube has a sealing structure for blocking a lower end of the water chamber. A lower half of the water chamber, located below the piston, is surrounded by the piston, an inner wall of the water chamber, an outer wall of the guide tube and the sealing structure to form a closed chamber. An elastic member is provided in the closed chamber for elastically pushing the piston upward. A water channel communicating with the water inlet and the water passageway is formed in the guide tube.