Another tip for the wiring is to resist the temptation to tidy it up too
Although it is normally good practice to bundle everything into a loom and spiral wrap it, cable ties it and clip it to something solid every few inches, this makes trouble shooting at sea much more difficult! When you install anything on a RIB think about making fault finding as easy as possible -- these things tend not to last very long on RIBs . . .
And don't build anything around it -- see Mike's experience in the gallery