AM I REALLAM I really about to make more holes in this floor??

[lanegordon]

Sorry for the title... not sure what happened there?!

Anyway: So, I have finished ripping out my seats, and am in the process of cleaning up the floor and going to be moving forward to the subfloor in a few days. The question is: After cleaning up and sealing all the holes from the old seats... am I really about to put more holes in this dude by attaching the firing strips? Is there a particular approach I should take (place to screw) or do I just deal with the fact the the underside is going to have "water entry" points with the new screws I put in or do I just deal with it. I'm assuming that stainless steel screw are the way to go for the sake of them not rusting, but is there any "industry standard" idea for not recreating the same problem when I attach the strips?