the present invention discloses methods and apparatus for pre - bunking cut timber and transporting cut timber . a plurality of portable u - shaped bunks or cradles are first releasably attached to a portable skid , and logs are loaded onto the cradles . in an embodiment , the cradles are collapsible . this step may be performed before a transportation trailer is on site . the load of logs , with the portable cradles are then moved as a unit and attached to the trailer . the trailer is provided with attachment hardware adapted to releasably engage the portable bunks . in an embodiment of the invention the trailer attachment hardware is removably attachable to the trailer , permitting the trailer to be used for other purposes . the present system permits improvements in efficiency by permitting logs to be pre - bunked while the trailer is in use elsewhere .