BIGBATMAN
With respect your posting highlights the ridiculous lengths we now have to go to in order to 'prevent accidents'. It used to be simple if the guidance was off we could self park. Then 'elf an' safety became involved. The result being that a) we cannot park without numerous unnecessary people and/or checks and b) the incidence of aeroplanes hitting anything while parking has in reality probably not changed one iota.
If aircraft hit obstructions on stands the cost to the airline would be such that if it happened too often ramp discipline would soon be improved and the problem would be solved. Assuming we have a problem in the first place, which 'elf an' safety would have us believe we do and most right thinking sensible individuals would dispute.