Originally posted by HangarPilot:

I always enclose my base area with a stakewall which I put far enough from the house that trolls can't swing through the stakewall and hit the house directly.

Trolls will swing thru that like butter. If you hear them and run outside to immediately engage, then all good. Otherwise, moats or an earthen wall are your best bet. And have everything breakable 8m away from the edge. That's the limit of their reach.