Then I do not have an answer for you. You need to get some sort of visa if you want to be as long for a year. DTV seems not to be your match if you're not a remote worker. Try back to back for a couple times on single tourist visas plus extensions, which gives you 6 months, until probably one day they'll deny you reentering the country on a third attempt. But you can always try, I mean every officer or port of entry is different. Or get retirement visa for a year and then move to non-B.

Non-B then if you are after a job in Thailand.