Can I enter Thailand on a 30-day visa on arrival and then extend for another 30 days before leaving and re-entering for another 30 days?

The user is inquiring about their plan to enter Thailand using a 30-day visa on arrival, extend it for another 30 days, and then re-enter Thailand for an additional 30-day visa on arrival. Comments confirm that this plan is feasible, especially if the user's nationality qualifies for a 30-day visa exemption. They also suggest applying for a 60-day tourist visa, which can be extended, as a potentially easier option.