I have just been given this boat, she is 1,20 LOA and has a removable keel, weighing 5 Kilos. The original has two masts, gaff rigged, I want to Keep it simple and rig her Bermudan, I have the original sail plan but need to calculate where the single mast should go and height of rig etc. Any thoughts out there? I have added both pics, sorry the instructions are in German, but you should beable to sort it...