Of all the positions on the ground, the ruck is the only one described as an art form. As the shapes and sizes of players playing in the ruck differ so do the methods of playing in the ruck.
The tall ruckman can use his obvious height advantage to feed the ball to running players.
The mobile ruckman uses his mobility and endurance to make many contests and provide a target.
The strong ruckman can use his strength and power to create space for teammates.