SoCal junior 'indoor' soccer

since quite a few people are posting soccer photos, here are some 9's & 10's i took in the states while visiting family. since there are boards around the whole field, my only choice was to shoot through the goal, which was a very small-squared net. it caused all kinds of focus issues and meant i had to shoot pretty much straight ahead. also, the boards were white so it made exposure challenging.

shot with the 80-200 2.8L

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wearing a pair of oakleys in the game will make you play like the pros...

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when keepers get greedy, the paramedics are onsite for the coaches (he scored one earlier)

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my nephew K2 pushes through a much bigger green defender

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Funny how when we shoot kids in sports they still have smiles on thier faces. Those seem to disapear as we get older and participate in sports...

I have been shotting outdoor soccer for quite some time and our city has just bulit an indoor soccer areana. I am very frustrated with the output of my pictures. I need some help. I have been shooting in M mode with ISO at 1600 or H depending on lighting. My shuttler speed has been set for 500 I have my Af on ALServo Mode and My aperture at 1.8 I have tried costom white balances to help ajust the diffrence in indoor lighting. And I have tried just using AWB.The lighting is not my problem it is that My shots are not focus and it either focus on the people behind the players or the one closest to the camera or just everything Burry I have my metering mode set on center-weighted average metering I have tried the Evaluative metering to still no good.I took 400 shots last night and I was maybe happy with 20 that is not good percentage. I have tried TV mode and Av mode the sports mode is the worst. My equiment is

Canon 30D
Lenses is Canon EF 85mm 1.8

I have also the 580 Ex Speed lite that I have just bought to try and help because lighting at these speeds is not a problem but to increase my shutter speed to get a frozen shot I will have to turn down my ISO or even my Aperture or if not both right. So I thought if I had the speed lite this would help for the lack of both. Is this right thinking? I haven't tried the speed lite yet thought I would get some advice from experts. I have looked at the speed lite and it seems to be evan harder for me to understand. Please help

I also have

Canon EFS 18-55mm
Canon EF 50mm f1.8
Canon Ef 100 - 400mm f4.5 -5.6 L IS USM
Canons Shoe Cord for Speed Lite