Considering I get fire-bombed by recruiters who don't even consider my geographic location, skills or stated desires, and who also can't be bothered to even ack

Considering I get fire-bombed by recruiters who don't even consider my geographic location, skills or stated desires, and who also can't be bothered to even acknowledge me when I respond like you suggest, I'd say don't waste your time. The vast majority of recruiters only want something from you and treat you like garbage once they're not going to get it. The profession's abysmal reputation is well deserved.