Hey Brian, Finding a manual would be like winning the lottery. The best I can do for you is direct you to some very detailed explainations I have written on rigging. At the main page of AllExperts,
Hey Brian, There will be very little if any info to be found on those old Kerma boards. They were only in production a few years and are very obsolete. A few parts may be replaceable but it really depends
Hey Jamie, Looking at your picture it all looks like the correct parts. You have to slide the end of the fin with the pins in first and slide it towards the tail. Remove the fin screw from the nut.
The sail that says boom 175 is part of your answer. This is telling you that to rig that sail properly, the boom length should be set at 175cm. Booms normally come in 3-4 sizes and each size covers a range