One option would be for Israel to do a "march to the sea" along Gaza's border with Egypt, destroying smuggling tunnels as they go, and declaring a one-mile-wide zone of control there.
Trucks carrying food and medicine from Egypt could pass after inspection, but no Muslims would be allowed in that zone except in trucks passing through.
In other words, you are saying that Israel should re-take the Philadelphi Corridor. I would hate to be the mother of the IDF soldier stationed there, between Gaza and Egypt. Let Israel take over the whole Gaza strip and give 48 hours for anybody who wants to escape to Egypt before the border is sealed!
-——declaring a one-mile-wide zone of control there.-——
One kilometer would be adequate.
Four or five tanks/howitzers should be set up abreast and begin firing into the zone. The firing should begin at the waters edge and progress to the border fence. At the conclusion, there should be nothing but cratered and smoldering dirt.
Then the guns should be moved to the geographical center of Gaza and the process begun again. After destroying a swath 200 meters deep stop. This is a warning. Everything is vulnerable. stop that crap or we will destroy it all.
The rubble will be overflown wit cropdusters dispensing salt. Nothing will grow in Gaza again.