[Kaiser]

You can certainly use a different programs, but it's for "Loftenfernrohr Lofte" is superfluous.
"Lofte" very easy to use, it is sufficient to know only one parameter (AGL or TAS), that would correct all the rest.
So with the help of Bombenfernrohr can determine the angle of drift, but unfortunately the servers is rarely used atmospheric effects.
I also use the scope "Lofte" on final approach in stormy weather.