Ok so finished my flight and got out the airport. It's rather nippy in Melbourne tonight.
Have a look at some of the pictures of my mini H quad build here:
http://forum.flitetest.com/showthread.php?9018-Blackout-Mini-H-Quad-Build-Log/page3
There is one picture of it together the right way up and upside down. You can easily see the vertical antenna at the front. It is mounted high to clear the frame, as far forward as practical to get away from VTX antenna and an old pen inner tube (remove the ink first!) is used to keep it vertical and protect it. In a crash it just bends but stays vertical during flight.
You can see the other antenna underneath the fame downthe back. It is held there by some foam rubber strips which are used as landing gear. I should really use another pen inner tube to seperate it from the carbon plate a little more and will do that shortly. This antenna is also using the carbon in a good way by blocking possible interferance from the vtx antenna.
Now do that test with your friend again and you will see there is basically no angle where both antennas are covered plus you have them at 90 deg to each other.