Targets too similar, plan of attract?

Targets too similar,  plan of attract?  

I have a few image targets that are way to similar.

Vuforia gets confused and thinks one is the other.

I believe I can just make a button that will only make one target available at a time

Should I switch the activate button under the "Data Set Load Behavior Script"?

Or should a change data set on the image target?

Should I just use a  multi target setup and then just have a button that makes only one active? 

Does anyone have a code example or file I could look at to do this?

Oh I am doing this inside unity3d of course and not the SDK

Thanks

Momay