Better call DOL. You don't need to license (title) a boat if it's not used on federally regulated water, if it's under 15' and under 15hp. I just went through this.
But if you want to pay taxes every year and have numbers on it , do the title thing and license it.
_________________________
God grant me the serenity to accept the size of fish I catch, the courage not to lie about it, and the wisdom to know that no one would believe me anyways.