No, not often, but...
I sometimes take the board off the mast (one screw only on Ketos so fast to do), so it can fit in the car with other boards and hydrofoils.
Only take the mast of the fuselages on occasion if I need to store lots of other boards in the car, waveboards, surfboards, etc, so there is more room - a "flyer" does not take up much space and you can choose your mast length and wings on a given day so sometimes an advantage even though time consuming.
Never ever rinse anything whatsoever - not needed with carbon foils
Most often I just put the assembled foil on its side in the car on top of the other gear, so ready to use next day.
If you got alu foils you HAVE to use a lot of time dissasembling every time or at least very often, but that is the price for the lower cost foils.
For carbon foils there is no need at all, a waste of time rinsing IMO and experience, and would be an awful menace to do every time you have been out
Would be even worse than if you should rinse and dry your wetsuit - I dont know (m)any who does that, apart from occasionally or in the winter when you drive back in the suit and straight into the shower
There wouldnt be much time left for surfing then
(or no job)