Your boat almost certainly came from the factory with a self bailer - mine has one (a DePersia, made of metal). I say "almost" because the factory got a little creative from time to time.
If you use a search engine like Google or Duck Duck Go to search the site you'll find several threads on it. To do this, type the following into the search bar: site: Daysailer.org "DePersia Bailer" . (Our moderator, GreenLake, developed that search method, by the way. Works like a charm.)
If it were me, I'd drill from the top (through the cockpit molding) with a hole saw of the proper diameter, let the hole saw's drill bit just penetrate the hull molding to create a pilot hole, then finish up by drilling through the hull molding from below. That way your holes will be exactly aligned.
By the way, you'll probably find bits of stray fiberglass in the very narrow space between the cockpit and hull moldings. The moldings are so close together that there's no room for a transom drain plug in the center - that's why it was placed off to one side.