Originally posted by John:

1- level your entire base at the same level
2- make a moat
3- make sure you don't have a ramp enemies can walk up into your base
4- make a simple stake wall

Done, enemies can't do jack doodles. Maybe drakes, but they are easy and once you killed the fourth boss that event has been disabled.

THIS!

I do not remotely have the issues other players do with bases being attacked because I make moats, and where I can't stake walls keep all the mobs except the drakes away from the walls.