Recently I have been practising luring boars with my scout so I can prepared in case an opponent steals my boar and I have to steal one back in return. I began to consider the appropriateness of luring boars with scouts in general. There are some obvious examples of where luring a boar with a scout is better than luring with a villager. On islands, your scout doesn't have much else to do and you need to get up quickly. On fortress (regicide or otherwise), the boars are very far away. On black forest, extra boars are best lured with scouts once you're walled. The real question is when to deviate from this. On Arabia, I tend to lure with a scout when I find my second boar in the very last spot and my first one is running low. I also tend to use a scout when a boar is behind a forest because of the sheer distance.
The economic impact of using a scout isn't massive, but for boars behind trees, even blocking the boar with a sheep while luring with a villager can be enough to justify the lure. The trade off is whether or not the loss of scout hit points removes that scout's military effectiveness. A weakened scout can still explore, but if a drush comes in or a forward, a full hit point scout is valuable to have. I suspect it's justified as long as your map isn't too vulnerable to early aggression, but the kind of maps where boars generate behind forests tend not to be too open.
The economic impact of using a scout isn't massive, but for boars behind trees, even blocking the boar with a sheep while luring with a villager can be enough to justify the lure. The trade off is whether or not the loss of scout hit points removes that scout's military effectiveness. A weakened scout can still explore, but if a drush comes in or a forward, a full hit point scout is valuable to have. I suspect it's justified as long as your map isn't too vulnerable to early aggression, but the kind of maps where boars generate behind forests tend not to be too open.