Which mount would work when cam is placed on window sill pointing (diagonally) downwards

[drwolf]

Hallo, 

want to switch from Arlo (VMC3030-100NAR) to Arlo Pro (most likely Pro 2; I strongly assume I can use the base station I have, VMB3000). The thing is I hope for better results with the new cam compared to the "old" model. However, which mount to go for? I need to position my Arlo on a window sill on first floor (4m from ground) pointing diagonally downwards to record the house entrance. Unfortunately I must position it very carefully with a good ankle so as not cover an area with unwanted recordings (passing cars etc.). It does work with the old Arlo to some extent but not very satisfactorily. Hence, reaching out to the community for recommendations for a good mount I can place on this sill. Drilling is not possible (clamp/tape is ok). Many mounts don't have the flexibility to be tilted a lot (so as not to cover parts of the sill/wall itself). Maybe you have a tip. Thanks