Unfortunately the solar film only reduces the total brightness of the image, which does not allow you to see prominences. You need a hydrogen-alpha filter with a bandpass of less than 1 Angstrom to see prominences. With the solar film you can see granulation (the 'graininess' on the sun's surface, basically continent-sized convection cells) and sunspots. As you can tell, we are at solar minimum at the moment and sunspots are few and far between. It is worth checking to see if there is much activity on the sun at
www.spaceweather.com or
http://sohowww.nascom.nasa.gov/ before you go out for a look. Basically, hang in there until there is a decent sunspot group to have a look at.
The plus side of the solar film is that when there are sunspots you can use the larger aperture of your white light telescope to magnify the sun's surface more than you could with a small aperture H-a filter or telescope and see as much as the atmosphere allows.