Mate de Vita said:
Make a brush over the area where you want the bomb target to be.
Texture it with AAATRIGGER.
Select it and press ctrl+t.
Select func_bomb_target from the list.
The point entity info_bomb_target makes the area around it (forgot the radius) a bomb target, but you can't control the size of the area.
Okay but the AAATRIGGER is pink. How it will look in the game ?