Mainship 390 2001-Replacing bow wash down hose.

[Beach House]

Has anyone successfully changed their bow wash down hose at the water supply end on a Mainship 390 (2001). It seems like I might have to cut a port for access through the anchor locker?
I'm hoping someone has had some experience with this problem. It isn't leaking now, but it is 23 years old and what a mess it would make if it failed.
Thanks,
Kathy