They could put up 100’ towers every 28 miles along the border with sophisticated sensors built by Boeing that will tell their Border Patrol when someone crosses, where they cross, what they’re carrying (if anything), where it came from, and where it’s headed.
Oops, sorry, wrong border... /s
Hell, they might as well make some money off this... start digging at the Mediterranean shore and dig the “moat” all the way down to Eilat/Aqaba! Give the Suez Canal some competition!
Drown the Palirats.
Dig the moat as long as the width of the Strip and as wide as its length. The Palis can keep it as long as they can tread water. Then the Israeli’s can trade in their fence for new beach front property.
I think the quickest way to stop the smuggling is to pay attention when someone is seen dragging heavy weapons and crates of munitions across the freakin’ treeless barren desert of Sinai. Just a suggestion, of course.