Still learning and this has taught me a few things e.g. it became "safer" with 1 colonist vs raiders. Less come, but he is well tooled up (M24 out of choice) when they do and has levelled up somewhat on shooting.
Also make use of less turrets (not time to maintain them all) which again I believe results in less raiders.
Also make use of less turrets (not time to maintain them all) which again I believe results in less raiders.