Thanks for all the incredible advice everyone. I'm the realtor wife. :) I'm of the opinion that our DM campaign fell flat. I continue to follow up with the 15 or so responses we got from mailing 2100 mailers three times in a row. I will send them stuff until they ask me to stop! But that was a pretty big disappointment. I definitely think there are just too many mailers in our area.
Door knocking is super not cool in this area. (Katy, TX a Houston suburb) People hate it and will report it as "soliciting" to the HOA and on Nextdoor. I'm not a fan of strange people coming to my door myself. Not sure I could convincingly pull off a conversation when I know I would be annoyed with me if I was in their shoes. Ha!
I do think the best thing is (like @Patrick Britton says) just having a great big pool of people that know I'm a realtor and love me for whatever reason. That's where I got my first listing and my first buyer. So I carry on being the social butterfly and trying to just be everywhere all the time.
The goal is to use my extra realtor income to fund our investing. I'll just keep my eyes on the prize and use the old fashioned charm to grow that pool. ;) We may do another round of mailers because it was fast and easy and not too pricey with EDDM.
We will certainly let everyone know if we find something that rocks our world! Something other than BP forums, of course.