Lynn,

No need for flooring in the attic except to any mechanical equipment.

I do myself attempt to walk across the rafters if I can see them. I might move some insulation around with my foot to find the rafter to step upon to get to something in an attic.

The main thing to remember is to document not only what you see but also the things you cannot see. For example, I have a statement that says everything below the attic insulation is inaccessible to the inspector and is not covered by the inspection. Possible defects could be present.

If you don't have such comments as what is hidden, you should consider to help protect you in such incidents.

JMHO

Rick