Ferry / Transport to Ko Phayam

Hi all,

I wanted to know if anyone knows of an operator that runs (private) boat transfers from Ranong to Phayam after official ferry operating hours (16:30 according to ranongferry website). I arrive later than 5pm in Ranong and wanted to know if there are other options than that? The Hotel on Phayam offered a private boat for THB 5,000 which I find is way too expensive.

Thanks for your help, mich appreciated!