Yes, bit premature but it will help me sort out the mount.
I don't want to drill the car, or trim the bootlid. The bootlid is almost OK, as it is still sealed, and the trimming pretty discreet, but no, just no. The holes in the gutter are inconspicuous, and can be sealed with shiny bolt heads when it is not mounted, but again, no.
So, I got this spare bootlid, to swap them as required. I plan on bolting a suitable piece of aluminium angle to the edge of the boot, the options are trim it like they say, but maybe a sliver more, mount the angle into the gutter, proceed as per the 9LR script. Or, mount it with the angle up, but that will (probably) require shortening the mount to keep it withing the regs, or angling it more. Angling may be doable, and that might get it further back, giving greater leverage to the DF, but again - too far back? - will there be sufficient AoA adjustment at that angle of the mount? I need to read some tech regs for WTAC and CAMS, and get out the trusty tape measure ...
It is also going to need some serious front aero, have some plans for that too.
Looks like the recent high workload task might be easing off, so GF, house, cars, and other inessentials can come back into play - hopefully!
