I was there in 2012. I would have checked out everything listed as a gay bar & I don't remember anything memorable.
Beware of neglected websites listing gay bars.
1 There will be some bars that closed, possibly a long time ago.
2 Where the bars are open, some will look less gay than your local branch of Tesco.
3 Even in somewhere like Brno in the Czech Republic, where there was a gay(ish) disco, with some very fit lads, none of them were interested in me in the way that I would find in Pattaya, or the Prague rent bars.
Actually, even in Thailand, Hua Hin had 4 gay bars/cafes listed on RECENT guides. Two of those are closed, including one which still has a live website, yet all the fittings are already stripped out of the building.