Use a minimum of 4 chains. Adjust the rigging to prevent damage to the chains. Securing the Platform Make sure the jib and platform are in the stowed position. Place a block under the edge of the platform beneath the platform entry. Secure the platform with a nylon strap placed over the platform mount near the platform rotator (see below). Do not use excessive downward force when securing the boom section. First Edition • Fifth Printing Operator's Manual Observe and Obey: Only qualified riggers