What has always mystified me and just about everyone I have spoken to about this disappearance is how the McCanns have always been good at encouraging others to do the searching while they get on with their own lives. The Needhams on the other hand have been out there in Kos leading from the front with very little money to fall back on. The difference is like night and day!
Kate has been back to Prai de Luz on several occasions since Madeleine disappeared. How do you know she didn't search while she was there?
You seem to think the only way to search is to physically go to where the child was last seen. I can just imagine the comments if K&G regularly jetted off to do that. They would be accused of wasting the fund money and neglecting the twins - and that's just for starters.
Physical searching - when you have no idea where in the world your child could be is the most financially wasteful and ineffective method to adopt. IMO.
The McCanns took the experts advice i.e. that keeping Madeleine's profile as high as possible for as long as possible in the public eye is what they should do - as that would give her the best chance of being found.
No doubt if they had ignored that advice they would be accused of being arrogant and thinking they knew better than the experts.
Damned if they do and damned if they don't imo.