Saloon Bilge Pump – Is this possible?

Here are 2 ways that it may be possible to drill a hole for a pipe:

Centaur-B-layout-saloon-bilge

I think there is already a small hole from the engine bay to the saloon, but it cannot be seen. If I fill the engine bay with water it does drain down to the saloon bilge so I know there is a hole somewhere.

The port locker looks like the best option, but judging where to drill a hole that would enter the saloon bilge would be difficult.

I may give up if it is too difficult, but the saloon bilge is definitely the lowest part, so it seams to make sense to be able to pump from here if required.