There is the slight issue that we are not Israelis - we are American. I don't really care if they decide to cut down a tree with a herring - it is their nation to do with as they deem necessary and discover what is effective there.Why is that the people that claim a fence along the Mexican border will not work, have no problem with Israel building a fence/wall to protect their border?
Is it a Fence Is it a Wall No it s a Separation Barrier The Electronic Intifada
Or Saudi Arabia is building a 600-mile long wall along its northern border with Iraq
http://www.newsweek.com/saudi-arabia-constructing-600-mile-long-wall-keep-isis-out-299664
Seems that walls and fences work for everyone but the US
The question remains will such work HERE. I think the clear answer is no - technology fills that gap more efficiently and we need something more efficient than a draconian barrier.