If you have a rack, I designed a 3D printable mount to put the Fly6 down low on the rack.

This one fits the Topeak Explorer rack:
https://www.youmagine.com/designs/fl...-explorer-rack

This one fits the Topeak Tourist DX:
https://www.youmagine.com/designs/ra...iq-fly6-camera

If they'll work for you, I can print them for you if you DM me. If you have a different kind of rack I can take a swing at modifying the design. I should probably shoot for a triangle mount too.