I've retained the Polish spelling, except for Polish-specific letters, and pronounce more or less the way Americans pronounce it with the Polish spelling. Among Polish people, I pronounce it the correct way, but I see no use in further confusing Americans who already are having enough trouble with my last name as it is.
The "f" sound in your surname is very faint and inaudible in normal colloquial speech
Where do you get that idea? The w (phonetically f) in -owski names is perfectly audible in all but the most element-ish speech (element in its Polish meaning).
I have to agree. I have NEVER heard a Pole with an elementary grasp on the Polish language pronounce the w as an "s" or not at all...