Hi Chris
You will find that the system works well with less displayed data as you will find out.

Click on an icon and you will see a marker come up.
I have still to perfect this but it will give the lat long of every clicked marker when done.
This will help with editing.
To see admin area  click here!
 

 

Welcome to the database map / hotspot locator
 


This data base covers the following countries please click the button for the country required.
 

 
 
United Kingdom (Great Britain)  UK
Spain N/A
France N/A
Belgium N/A
above to be programmed  
see all Europe
  (this may bomb answer 'yes' to continue script. Just too much data for it)
Europe

instructions when in a map.
 
You can drag the map about by holding down the left mouse button and
    pulling map about.
You can double click an empty space to zoom in or use the zoom tool.
Click Satellite box for picture mode
Click Hybrid box for picture and map mode with overlays of all data.