Is a 6-month stay on a multiple-entry tourist visa feasible with extensions and travel to Singapore?

The inquiry discusses the feasibility of a 6-month stay in Thailand using a multiple-entry tourist visa, which includes an initial 60-day stay with a 30-day extension, followed by a 5-day trip to Singapore, and then returning to Thailand for another 60 days with an extension. Responses indicate that this plan is acceptable under the multiple-entry tourist visa guidelines.