Leebrain

Sorry I am new. How do I post a pic?

Hi all. Just joined and it's our first project boat. I have been told there are some very helpful and knowledgable people that can some times help with advise as we go along. So my first question is in regards to filler. Our boat is fibreglass and there are places that I need to fill prior to primer and paint. I have many a year experience in car both filler and wondering if this was ok to use? Or what are the alternatives/pros and cons? Many thanks