terry writes:

Now Mxs before you take off in your simulated Baron,
do you check the takeoff performance figures in the simulated flight
manual versus the lenght of runway at your simulated departure
airport?

No. According to the POH (the sim version and the real version are the same),
4500 feet is enough for any situation, so as long as I have at least 4500
feet, I'm fine.

Do you know how to work out what your density altitude is?

I have a calculator and an E6-B to work things out should that really become
necessary.

Real pilots do this if there is any doubt they might
not have enough distance to clear the runway or any obstacles, and
since you are so obsessed with manufacturing pretended reality I am
sure you would want to be doing this also.

I stay close enough to the center of the envelope that this is never a factor.
It's a lot easier than pushing the envelope and having to do a truckload of
calculations before every flight just to see if I can squeak by.