RULE 252. The vessel's gear shall be rigged so as to protect the driver against swinging loads. When winch controls are located so as to expose the driver to a bight of the cargo runner, an additional preventer shall be placed on the lead blocks at the heel of the derrick. When the winch controls place the driver in such close proximity to the heel blocks that could cause clothing to become entangled or the driver's body to come into contact with the heel blocks, the controls must either be moved or other satisfactory safe arrangements must be made.