Israel has MLRS, right? Start returning a full pod (12 rockets) back at every launch site. Each rocket can take out about 1 square kilometer, I’d say fire them all at the same reference point. Pretty soon there won’t be anything left in Gaza to hide behind. As Col. Smith said “Overkill is under-rated.”
Actually long time ago I e-mail'ed Israeli-Weapons.com as to why MLRS wasn't being utilized to stop musloids' home-made and Iranian-made rockets coming from Gaza, they replied MLRS not existent yet. Iron Dome AFAIK only on defensive mode instead of U.S. Aegis' "seek and destroy."