You are going to the boar anyway, why dont you just lure it and leave it under your TC?In my opinion the best thing would be if the boar would stop chasing military units after a short distance. It would make laming boars with the scout impossible and the possibility of laming sheep and killing deer would remain, so there would still be laming aspect left in the game, albeit way less harmful.
Meanwhile, just had a crazy idea... Would it be worth putting 4 palisades around the boars to avoid them getting lamed? Specially vs mezo?
Idle time is a bummer, but maybe if you use the scout to protect the most vulnerable boar and wall the 2nd with one vill it wouldn't be that much time wasted, and the steak is secured.