STEP SIX

Next, we needed to use a string line to check whether it cleared the scoop, in a straight line from the windscreen centre point to a point on the ground 8m forward of the car (remember, this figure may change depending on how wide your protrusion is). Tape the string line to the windscreen centre point — or have a helper hold it in place — and run it forward, all the way to the mark on the ground. The string is going to need to be as taut as you can make it, to ensure that it is as straight as possible.