The large number of trees on this map can allow for significant undetected movement, blocking views from both other players as well as structures or ships. Trimming the trees near your base may be a good first step here, before setting out under the cover of the canopy to attack. Alternatively, you could take the maintenance tunnels underground for a sneak attack, but with lots of corners and places to hide and little room to maneuver that could be a dangerous course of action unless you're very alert.