Since Coastal Recreation of Coste Mesa CA, the builder of Balboas, have been long gone, you can't go to them, I am sure you have found out. But, there are a number of mast companies that can build a mast and boom for your boat. I hope you have the old mast for measurements. You will probably have to go with a new mast base and masthead, etc. as the new extrusion probably will not be the same. Tillers are available as well. They can be made up custom to match what you had. Not sure if this is allowable, but you can contact Hooper's Yachts in MN who can help. They can be found on the web and are next to WI.