Would be best to do some reading on the different resins.
Then choose which works best for you.
The subject is like politics and religion .. everyone has there own view.
Some stuff get pretty technical ..
Or .. just find a local fiberglass supply company and talk with them.
polyester resin = your boat was built with this stuff, cheapest
vinyl ester resin = newer version of polyester, mid priced.
epoxy resin = maybe best if done right, less smell, expensive.