AW009,
The OP asked about PC1 profiles for clear area and helipad profiles.
You have introduced OEI OGE hover capabilities which is another kettle of canaries: and for you to lambaste others who are addressing the OP is failing to grasp the topic under discussion. I suspect that although there are many years since SASless drove Wokkas, he has a reasonable grasp of their capabilities.
212man also has a very sound background of twin ops and related performance issues, so trying to belittle his perfectly correct assessments does little for your credibility. Do not confuse your voluminous postings (81 in just over a month) with acceptance and competent knowledge.