personally against goal line technology, it takes the talking points from the pubs and its what makes football so much better than most sports. wheres the talking points in golf etc?
if we do have it though, i cant see why they cant just put a chip in the ball, with sensors around the goal which you can clip on and off the posts. issue the refs with them like they do whistles and flags, and they can be used at any level up and down the leagues, ie if liverpool drew ashton utd away from home it wouldnt be a problem.
this technology is already available, and relatively cheap, solutions dont have to be ridiculously expensive.