Ahhhhhhh, well now that l'm here in Gumuskaya, l'm slowly getting the hang of times. and they are a bit hit and miss but definetly leave Yalikavak at 25 minutes to the hour. From Turgutreis to Yalikavak is more frequent, and pass Gumuskaya at quarter past the hour and 25 past the hour. Seems tho that l'm suddenly seeing more of them in the last few days , so as mentioned on this thread, it looks like they've put more on for the season now. but it's a great walk into Yalikavak and mainly down hill ! but took us an hour to walk back to Gumuskaya and hard work with lots of up-hill!