Hi Gaston

! OK I'll try to answer our questions to the best of my abilities! 1. I tied a knot with a short stationary end at one end of the string, & pulled it up through the roof & tied it onto the horizonal front mast to rear mast string. There is not anything that the cabin end attaches to on the interior of the cabin, so there shouldn't be a long end after the knot.
2.The end being held by the fisherman Klicky is an added custom piece I designed to lift the white cargo hold cover, & to hoist the fishing nets on to the deck. It will need will 1 black pulley hook, 2 black winch hooks, & 1 or 2 rope handles for Klicky's to be able to hold on to it, to work if you decide to add one to yours.
3.There is a white string that has a knot that goes through the hole at the top of the front mast. It then is routed down to the front nose of the ship, going through the loop and then it wraps multiple times around the opposite side of the anchor chain tee horizonal post.
The string holding the red bouy is a separate string. I kind of tied it on the string in a custom way so I could slide the red bouy ball to different positions on that string. If you cut & tie the bouy ball in one position it will limit its usage.
I hope I'm not confusing you! Good luck!