The real strategy is to get delegates selected that are loyal to you. Courting them afterwards is not very effective.
That is not always possible. The state party chooses the delegates in some states. It would be nice if a few of the chosen delegates actually liked Trump. Jeb/Carson/Rubio chose a few of them who are now unbound. It would be nice if a few of those unbound delegates actually liked Trump now. Choosing your own delegates is better, but it is not always an option.
That’s funny. You really believe the GOPe NeverTrump Party insider delegates are going to support Cruz at the Convention.
If they were all in for the Establishment’s NeverTrump tool like you imagine he would not have lost the South and barely won his home State.