Lategame defense strategies

[Panzer]

Hello guys,

been playing this game for like a 100+ hours. I have no problems getting off the planet but when i want to stay i cant survive more than one year, after that its up to luck. I guess my problems lie with my defense, my little killbox just doesnt cut it anymore. I get huge ass raids, mainly because of starving/mad visitors littering the map with guns and thus pushing my colony value through the roof, started to gather the weapons and explode them with grenades because i cant sell all that stuff.
So there are several things i want to know, mainly, what are your ways to keep your colony alive in the lategame?
Other than that, some questions regarding raids: Are raids capped in any way, is there a maximum raid strength? Afaik the game calculates your strength (roughly) by number of colonists+number of turrets*0.4+colony wealth+time spent, is time spent capped at some point or does the raidsize increase endlessly?

Here's a picture of the killbox of my most recent colony, has also been my most successful colony thus far. Any tips are welcome.
http://imgur.com/ANz0wZ0

overview of colony, 17 colonists atm:
http://imgur.com/5GGpFx2

http://imgur.com/CTHPjHh

[Matthiasagreen]

My biggest advice is way more turrets. A turret must have three spaces between it and the next item to preven damage to that item. So if you were to space them three spaces apart, you could fit way more turrets in there without causing a chain reaction. Check out this thread for some ideas. http://ludeon.com/forums/index.php?topic=5936.msg57540#msg57540

[EscapeZeppelin]

My biggest advice is way more turrets. A turret must have three spaces between it and the next item to preven damage to that item. So if you were to space them three spaces apart, you could fit way more turrets in there without causing a chain reaction. Check out this thread for some ideas. http://ludeon.com/forums/index.php?topic=5936.msg57540#msg57540

I've recently started putting turrets much closer. If you put a stone wall between each turret you can prevent them from detonating each other and fit a lot more in a small area.

[Panzer]

hmm back to turrets then, had limited success with these, the inferno cannon mechs always made short work of them and the powercords burned down like fuses, eventually disabling all the turrets. But I do like the designs in the thread, which is great by the way, thx for posting, matthiasagreen, havent read it before.
Only problem will be the feared doom drop/crashed ship at your mortar site then, other than that, I like fighting with my colonists, need to find a way to combine that with the turret farm.

[TheGrover]

hmm back to turrets then, had limited success with these, the inferno cannon mechs always made short work of them and the powercords burned down like fuses, eventually disabling all the turrets. But I do like the designs in the thread, which is great by the way, thx for posting, matthiasagreen, havent read it before.
Only problem will be the feared doom drop/crashed ship at your mortar site then, other than that, I like fighting with my colonists, need to find a way to combine that with the turret farm.

use powered walls to transmit power to objects that are likely to get shot at

[BetaSpectre]

Check out the other thread about turret defenses. There's a "pac-man" defense. It seems invulnerable.

Alternatively using the turrets like land mines works for anything but sieges.