If you are already playing with some mods, let me recommend "Improved Garrisons". One of the best mods on Nexus for BL and will address your issue in a great immersive way.
In IG you can set your garrison to a)patrol the region (automatically respond to hostile parties, b)defend villages (send an intercept party when raids occur, or even c)escort caravans (so trade is not disrupted).
Once you have your garrison recruited (which IG can also handle for you in a fantastic way), you select your garrison 'patrol' (select specific troops to be in patrol from garrison troops just like outfitting a clan party, including size of patrol up to 200 I believe) and ka-ching -> next raider gets a hostile reception. I love when I get notifications that my garrison patrol has captured so-and-so, and you can even set it so they ransom them and you get the funds transfer into your denari bank account.
In IG you can set your garrison to a)patrol the region (automatically respond to hostile parties, b)defend villages (send an intercept party when raids occur, or even c)escort caravans (so trade is not disrupted).
Once you have your garrison recruited (which IG can also handle for you in a fantastic way), you select your garrison 'patrol' (select specific troops to be in patrol from garrison troops just like outfitting a clan party, including size of patrol up to 200 I believe) and ka-ching -> next raider gets a hostile reception. I love when I get notifications that my garrison patrol has captured so-and-so, and you can even set it so they ransom them and you get the funds transfer into your denari bank account.