Best POC height for each FH grip?

conventional wisdom is that you should try to hit tennis balls at waist height. however that is somewhat influenced by the grip. what would you say is the best height for each grip?

I would say:

conti: mid thigh (like in baseball)
eastern: crotch to hip
semi-western: belly button
western: slightly below chest
 

boramiNYC

Hall of Fame
don't buy any of this. maybe when you assume and hold some conditions the same like stance and swingpath but no point doing that. Ie I find shoulder head level ball most simple to hit for my E fh.
 
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