I was using Grindr, Hornet and Blued, although Blued seemed best.

Take care to negotiate what they have to do to get paid.

I had one who seemed not to speak much English when we were discussing the deal in advance. When he showed up, he spoke very good English but was quite poor in bed. Reluctant to do much. Good job he had agreed to $20 and not more.

I had another one who said he could kiss, said he could suck and said he could bottom, for $20. When I said you have to do that to get paid, Kiss + suck + bottom = $20; No kiss, no suck, no bottom = $0. He said no & "I am lucky not to meet you". Clearly he was expecting to get paid for showing up and not doing much.

It's not quite as easy as in Pattaya, but I presume you are going there mainly to see the temples.