You can’t shoot ‘em, if you can’t see ‘em! This lifecraft is completely covered. It’s not one of Titanics rowboats. Also, you can’t sink them by punching a hole in them. They’d probably still float even with most of the double-foam-filled bottom blown out.
There is no “head” or bathroom on this particular boat.
The pirates relieve themselves in the ocean, from the deck.
It is not like they stay below deck, all the time.
And maybe I've oversimplified, but a half-dozen boy scouts would bring more testicular fortitude to the confrontation than our entire state department and current POTUS.
/johnny