Seems like we're all on the same fs/bs flip train. I'm currently working on getting a proper clean bs one, I actually really like how it turns and catches. But sometimes, as Silouhette, my moves are totally off... As for fs flip, It kinda starts nice until the catch where I freeze around 145° with my board/feet too much in front of me and unable to bring it back.
Also working on my nollie cab, It's my go-to trick on pyramid/steep banks and spin it really easily, but never made it properly on flatground. Got some decent ones last week, and watching Bobby de Keiser placement doing it over a trashcan really helps. like using your whole back foot as in a regular nollie position instead of being on your toes like for a nollie fs 180