Drupal7 GMAP module, show and hide certain markers
I was able to show and hide specific markers on my full map under Administration » Structure » Views » Full Map View. I added a filter that showed markers based the Content: Author uid. Then I set the pages I wanted to show to have one author and the other locations that I didn't want to display to a different author. This article helped me figure it out: https://groups.drupal.org/node/19614

Hope that helps you.