Googling "PowerFlarm antenna" I see both two antenna (thin or thick)
and single antenna installations.
But I still don't get the 3-4" hole. Expiring minds want to know.

And then this rather interesting picture of a PowerFlarm "Perfect"
antenna location as mentioned by Craggy Aero. ;-)

http://www.google.com/imgres?hl=en&b... r:0,s:0,i:73

Thanks, John