As winter is here, and many days have very flat light, with white skies, and snow on the ground, I am wondering if I should try to pre-flash some film.

Has anyone done this, does it really make a difference in such low contrast scenes? What are the positives and negatives of pre flashing? Lastly, what is your technique when pre flashing film?

Here's one example of where I might like to try pre flashing. I don't know what exactly it would do, or if it would help, as I have no experience with it. This scene spot metered between 14.5 EV - 16 EV.

Winters First Snow by Andrew Marjama, on Flickr