The third step on the planning checklist is to choose the restraint method that is most suitable given your load and vehicle.
Loads can be restrained by two basic methods: tie-down or direct restraint (i.e. containing, blocking and attaching).
The following diagram shows the different restraint methods for controlling load movement in the forward direction. The same principles apply to backward and sideways movement.
It is possible and sometimes necessary to use a combination of tie down and direct restraint methods to meet the loading performance standards. For example, in some circumstances the tie down method may be adequate to meet the standards for lateral and rearward forces but may need to be supplemented with direct restraint to meet the forward movement standard (eg blocking using a suitably rated headboard) (see Lessons 4.1, 4.2, and 4.3)
Page 13 of the load restraint guide provides references to relevant sections of the guide for further detail.