This bit kept me stuck for ages after I refered to the walkthrough too. I think what you do is lower the left anchor and then go to the controls and move the ship to the right (i think) and then drop the right anchor. After they connect underwater you raise the left one again and pull it through the window with the sythe. Once they are through the window you go to the other button and I think you try to raise the other anchor then go to the controls and hit reverse. i think this is right, i forget exactly what I did as i was so extatic to get past that frustrating bit that I just quickly saved it and forgot all about it lol!
I'm still on the same level in year three actually. Its nice to know that somone else out there is still playing and has'nt finished yet. I thought I must be the only one left
I hope this helps