Good rule of thumb for when to get your IFR clearance on the ground.
For some time I have been working on a hard number for when to get my IFR clearance on the ground vs picking it up inflight. Today, on Opposing Bases podcast (if you aren’t listening to it, you should) episode 443 they were talking about IFR clearances and release times etc. At one point the discussion centered on picking up on the ground or inflight.
ATC really needs to get you to MVA, which of course we can’t see, but typically the final approach altitude is reasonably close to MVA. They strongly recommend if you cant climb in visual conditions to at least that altitude PLEASE get your clearance on the ground! That makes a lot of sense to me and is my new “hard number.”

That was a great episode (most of them are)!