FLARM antenna installation

Hi,

I have recently imported a Discus BT into the UK.
The glider has FLARM fitted with the antenna mounted
under, and parallel to, the coaming.
The FLARM installation manual states that the antenna
should be mounted vertically.

Mounting the antenna vertically under the coaming means
feeding it down between the electrics, plumbing and
instruments behind the panel.
Ive considered mounting it on the shelf behind the
spars but that leaves it vulnerable to attack by any
other luggage on the shelf.

Anyone out there have any suggestions for mounting
the antenna wher it won't get blocked by the engine
/ fuel tank./ instruments / pilot etc.

Regards

Kevin