Can be done.... but why not just kill the launcher?
Let them shoot the rockets, chances are they won't do much
damage against hardened installations anyway. Kill the
launcher with with our UAV-Apaches.
The Asters got Exocets to worry about...
There's a lot of area to cover. The Israeli experience in
Lebanon recently itself gives a textbook case on how difficult it
is. Also, the helicopters have to worry about enemy SAMs.
The US solution actually was to deploy B-2s to hunt down Soviet
road mobile ICBMs, but yeah.