The Dink Network

I'm stuck on that secret island in prophecy of the ancients. It lies in the goblin lands. You can get there by ask to the man in the boat if he wants to bring you to it. I saved my game on the island and now I m stuck. I can't go back and I don't know what to do on the island. According to the walkthrough the goblins should let me in after I talked to the man at the other side of the castle. But the goblins don't
Does anyone know what to do now?

Going to that island is necessary in order to complete the game... Do you have the hard as rock potion? (something like that) You'll have to drink that, and to drink it you propably need to talk to the man on the backside of the castle. I think the boatman should be somewhere there too so you can get off the island when you want.

the boatman is there but I can't talk to him.
and I only have a sword a and a rock in my inventory (plus 6 spells: fire, ice , spark, slime, bonca and goblin)

Try to talk to the boatman from all angles and places... There are two likely explanations to why you can't talk to him; he's placed weirdly so you can't "reach" him well by talking, or there's a bug. In the latter case, the best option to fix this would be to cheat your way back to the mainland.

how do I cheat myself back to the mainland??
the boat man doesn't listen to me (should be a bug or somethin)