7DTD_Trailers.jpg
Using up the trailer park POI i have in my small town. The blue is the trailers and raised paths so i can jump between them and red is spikes in a 1 block deep trench (only had time for 5 out of 6 trailers to do so). Cleared everything around to not obstruct zombie AI pathing. No other overhangs used.
Some of the Zs tried running through the door or something INTO the trailers themselves (the one i was at, but i frequented different roofs). Shooting from above the ones that were flinching on the spikes. Good defense for first horde, we'll see how it fares for the second. In the end only a few spikes were missing, although invoking the horde again required me to lure them against more spikes.