Originally Posted by FrankSchwab
If it were me, I'd replace them - but that's just me.
Looking at the picture, the wear on the ribs looks pretty even all around so they're probably fine.
But, You've already made your decision, haven't you?
No better time than where you are in the process. It's not about being broken but about preventetive maintenance (as you say).
Here's a link for reference if it may be of interest to you... ==> http://www.pbase.com/mainecruising/replacing_a_cutlass