Im fairly new to photography as well and have been shooting sports (ice hockey) in dimly lit arenas where the action can be a fair distance away. Ive recently been shooting only in manual because I find the images whether good or bad were at least consistent.
Things I do....HTH, and maybe I'll get some tips too:
I try to get to the arena early before the event to take a few shots to determine what settings I would use. Each venue is different so what works one day may not work the next.
I start off trying to keep the ISO as low as possible. If my widest aperture and slowest shutter speed is still to dark I start bumping is up. Ive been shooting at 6400 with my 7D in most arenas. I have been able to get it lower with better lighting. Noise is sometimes a factor, and more evident when cropping is done.
My aperture is wide open at 2.8 for my lens due to the low light, letting in as much as possible. Ive been bumping this to 3.2 lately in order to get more of the shot in focus....and will probably experiment some more with this setting. However, the higher this setting the darker the image, all other things being equal.
Ive found in order to get a shot without motion blur I would need to be shooting at around 1/800 shutter speed. There are times when this is still not fast enough but the majority are okay. However, again increasing the speed results in a darker image.
White balance has been an issue in some arenas to the extent where I can get two different temperatures in the same shot. Ive been cleaning this up using camera raw (i shoot raw), along with some of the noise (which tends to take away from the sharpness). Im awaiting an expo type disc in the mail which I hope will help set the correct white balance in camera.
As for the fence....Id keep it out of the shot unless its contributes to the effect youre looking for. I have enough headaches if I need to correct settings.....I couldnt imagine having to remove an obstruction as well.
May take some time to get settings dialed in.....Did I mention to get there early.
Funny how every time I go to game, since taking up the hobby, I find the first thing I notice is the lighting.
