Jugginator
Tester
I don't know, I think that's just you're in too big of a place that early on. I build small, tiny horde bases (a bit bigger if playing with a friend or two) out of wood and cobblestone, and they are barely - if at all - touched. I build just big enough for my supply of wood/iron for spikes.. and for time.. and generally try to dig at least a 1-deep or 2-deep pref moat around each layered wall with spiked in the bottom for them to get sucked into. Works like a charm, even solo. This is day 28+ on Survivalist with 16 spawns. Walls last just long enough to make it through the night if they get past the traps / defending is off the game. I don't think one single wall does it, that's the thing. Think a core with a wall 1 block away surrounding, traps 1 deep wall, traps 1 deep, wall. Pentagon style. Then advance to big buildings when you have the resources to trap it all.
Perhaps having the attacks spread out more would be better, not saying the honeing in on one spot is bad, but multiple spots would be better. a15/16 you could pick a huge whatever and make do, 17 gotta start small.
Perhaps having the attacks spread out more would be better, not saying the honeing in on one spot is bad, but multiple spots would be better. a15/16 you could pick a huge whatever and make do, 17 gotta start small.