Will I be denied entry to Thailand if I travel frequently under the new visa rules?

I did in past (before Covid) do 4-4 weeks or 5-5 weeks on/off swings working offshore. I did for several years enter Thailand with Visa Exempts that then gave Permit to Stay of 30 days. When on the 5-5 weeks rotation as it was working offshore in Australia I got some more than 30 days in Thailand on my leave times so I had to go to the local immigration to do 30 day extensions for 1900 Baht on top. I had at that time never a problem or when entering Thailand or when doing my extensions.

But it was then and things looks quite stricter now and is best to be well prepared with evidence about your work and I read you bring documentation with you to present if questioned.

I had only some issues when to check in on the flights when traveling to Thailand as I was asked quite a few times to present that I had a ticket out of Thailand. The company I worked for paid for my travels and used a travel agency in Australia even when I worked offshore in other countries. I requested the travel agency to book me a real rebook able/fully refundable so called ”Seaman’s Ticket”. These are to my understanding not nowadays cheaper. But have the advantage that it can be changed without any extra costs often as the nature of working on ships or on platforms is as it is. So I had a real booked and paid flight ticket out of Thailand as to present. Even it was some days more than 30 days in Thailand it was always then accepted when checking in flying to Thailand. As it is currently I think It’s a high likability that Immigration will part of questions when entering Thailand with your travel pattern ask for see your departure ticket out if Thailand…

In the position I worked in I could not leave the platform (beside reasons like sickness) until my back to back had arrived onboard with same helicopter as I stepped on a few minutes later to fly ashore to the nearest helicopter airport.