Thanks I have been doing both (ctrl groups with no fleets + using the zoom + setting the threat range). The problem with the latter is in a grav well where I am building a stream of new frigates. Gets really annoying to have to reset each time. On the other hand using ctrl groups is fine but can be a bit annoying playing at faster speeds when you have more than one battle front as you can easily forget to move one of the groups. Besides by the time I ctrl hotkey one or two 'factory' planets, I only have eight choices which isn't much if you have two battle fronts plus lots of different ships.