AFL - video umpires

I say it's about time the AFL introduced video technology, not least because of the stuff ups that happened this weekend, but more importantly from my point of view, what happened in last years grand final with Tom Hawkins poster that was given as a goal.

Yes I know everyone is human and therefore makes mistakes but the general footy going public expects the umpires to be as close to perfect as is humanly possible and making mistakes, as elimentary as the Geelong not goal is simply not good enough. The goal umpire was in the perfect position but still managed to stuff it up. Yes I know it all happens very fast but really it was clear to see that it was a goal and should have been given as such.
But I wonder if video technology was available whether they would have gone upstairs anyway? I guess we'll never know although when the umpire signalled the point it did look as if he was seeking clarification because the all clear isn't given by the boundry umpire.

One instance where video technology in all probability would have been used is on Friday night's is it an Essendon goal or not? I'm still not convinced 100% but i'm 95% sure that it was a goal and replays did help to clear things up for me.

Yes I know video referals are time consuming and costly and confusing for the people at the ground, but personally I'd rather the score be accurate rather than open to interpretation.

But they must come with restrictions. Such as if you can't tell with 5 replays then benefit of the doubt must occur. It's ridiculous in cricket where they take 17 000 different replays and then give it out when if it took so long obviously doubt must have kicked in there somewhere.

Another option that was raised by the Herald Sun was putting a chip in the ball so that when it crosses in between the posts it sets off lights or something.
This is an idea but it has its limitations, such as it doesn't tell you if it was touched, so it wouldn't help in Geelong's case, it just signals if it crossed in between the posts which would help Essendon, and the Saints in the Grand Final as the ball hit the posts.
But the range of the reciever for the chip would have to extend above the goal posts as we have seen more than the odd ball go higher than the goal posts, granted not so much after they raised the height of them, but still it does happen.

I think maybe the best solution would be a mixture of the two, the chip definately would have helped the Saints when they took on Adelaide earlier in the year when the ball went over the line, bounced off the goal umpires leg back into the field of play and was called play on.

Yes umpires aren't perfect and we know this, boy do we know this, but maybe with the help of a little bit of technology they can get close to it...