So we can also stop to implement other rules and stop to go after the perpetrators and suddenly, we will have fewer inmates in our jails. Stop to radio detect drivers who are to fast and suddenly we will have more compliance????? Rules will only be kept if punishment is certain. In this case, there must be a fence, that makes clear, that there is no easy way into Israel. Reasoning from smuggling to terror is totally inappropriate, as smugglers don't come to kill. It's not their business.

Looking at the construction of the fence it would be advisable to add a lot of rolled barbed wire. And, if any Arabs on the Israeli side are caught aiding the Arabs on the Egyptian side they should be deported to the Egyptian side. Or shot outright. The Bedouin will find other employment and the African/Moslems will find another country to take them in.

plant mines along the fence plus razorwire over the mines

Yes, plant mines along the fence plus razorwire over the mines - This should be done in a fast pace. Then you may want to build the wall.

....targeted killings with drones. The Sinai Beduin are quite calculating, and smarter than any average Californian. Changing their cost-benefit-package calculations will re-balance their assesments about which direction to point their criminal actions at.