If your Boler is still original then the outside is not paint but a fiberglass gel coat. The Boler body is made of the same material as quality fiberglass boats, so I find the best product for cleaning and polishing are made and designed for fiberglass boat. For stains and mildew an acid based hull cleaner works well, there are oxydation removers, waxes and polishes. A little elbow grease and the correct product can make your 30+ year old Boler look close to new. One thing to remember is that gel coat is porous and any coating like wax will penetrate into the surface, this is good unless you want to paint your Boler, then this wax can give the painter nothing but grief as it caused fisheyes, and problems, so if your plan is to paint your Boler in the near future I would not recommend applying any wax or polish until after the paint is applied.
An excellent article on fiberglass waxes http://www.boatingmag.com/gear/boatinglab-tests-waxes