Herc's not piloting Jaegers anymore, but that doesn't mean he isn't still plenty strong, thank you. And it's not like she's particularly heavy, really.

He has to pull back a little when she tugs at his shirt, helping her yank it off over his head and then letting her figure out what to do with it. (Drop it over the side, probably, he's not paying attention.) He's busy with other things, things like trailing his lips over her jawline, pressing whiskery kisses into her skin.