Just fitted mine (double pod) and found this worked too. Line up the pillar exactly where u want it, then with a drill bit smaller than the screw (obviously !) drill a small hole through the yellow clip. Then u can screw straight into this hole. Must admit, was a bit awkward getting the screw into the hole i had just drilled.
Oh yeh i also used a longer screw (longer by about 1cm) as the one supplied would only just bite in the hole and just pulled out.
Hope that all made sense !?
Havn't fitted the gauges yet so may need some velcro aswell to
help with the weight but feels pretty sturdy with just the screw.