If they can track and shoot them down counter battery fire should be a snap. The retaliation should be so swift and sure that any Palestinian seeing a launch going on will stop the firing to protect their own life.
The rockets seem to generally launced with a delay mechanism - sometimes just a long fuse.
Light the fuse and move away a couple of hundred yards. No worries about counter-battery.
The problem is that the terrorists set up launch tubes in residential areas, often right next door to houses, schools, mosques, and hospitals, arm them, and fire them remotely, long after they've evacuated the area. They hope for an Israeli counter-strike, in order to generate dead women and children to parade before an Israel and Jew hating international media.
On the other hand, the people of gaza democratically put a terrorist organization in charge of the territory. They made a decision to institutionalize the destruction of Israel in their government. Which IMHO, makes them responsible for the rocket attacks against Israel, and makes Israel's hesitation for causing "collateral damage" irrelevant and should be abandoned.
Mark
I'm not so sure. Missiles differ from ballistic targets, like artillery, in that they have a long thrust periods far from the launcher. The closer to the launcher you detect a missile the smaller the uncertainty, granted. Even a relatively accurate track of a purely ballistic object gives pretty large error ellipses in launch and impact unless the object is being tracked near launch or impact.
Counter battery fire is generally satisfied at having about a one percent probability of a kill with a single return round. I don't mind firing a couple hundred rounds if the suckas are still there. If the Isrealis fired hundreds of rounds into populated Palestinian areas in relatiation for one missile launch, of course, they would be accused of overreacting and using "disproportionate" force. Of course, this tactic would be, comme on dit, "effectif". When the Hitlerjugend took potshots at U.S. forces from a German village, American artillery would level the village. Needless to say, the German civilian population did not warmly welcome the Hitlerjugend's arrival.