If you followed the Road Map and came here to do this trophy during Step 1, well done, as you can now do this the easy way. Get to the Heli Tours in South East Algonquin anytime *BEFORE* you unlock Alderney. Steal a chopper and head over to Alderney to initiate an instant 6 star wanted level. Now simply fly around in circles at high altitude for 5 minutes, job done. When the trophy pops, reload your last save to erase the time lost doing this trophy and continue on with Step 1 of the Road Map.
If you unlocked all the islands before this trophy, then things are now a little more difficult. Get your hands on a carbine rifle, plenty of ammo, and some armour. Now head to your safehouse in Middle Park, Algonquin, the one in the North East just by the bridge leading to Broker. Cause trouble to get a 1 star wanted level. Shoot the cops that turn up til your wanted level goes up to five. Now back into the safehouse lobby and shoot police as they come through the entrance doors til you get a six star level. Now just back up to the yellow arrow to enter the lift and into your safehouse. Now all you need to do is stay here for 5 minutes **NB stay away from the balcony, cops can shoot at you here so stay indoors**. Once the trophy pops, go to bed and save to lose the wanted level.