Bow thruster tube install the old fashion elbow grease method in half the time.

Bow thruster tubes for big boat require special attention. Often you must cut threw structural members and cross woven fibers meant for strength up front. Tube installs of this type must be done the hard way due to hull thicknesses often in excess of 4 to 6 inches. Boats built well will always pose a challenge. I do all the myself but its ok to not be perfect. Perfect comes during the fitness shapoing stage after this square and v cut method we use at boat yard San Diego.