ok... now I know what you are talking about.
Unfortunately... it's part of the "Fascia Assembly". So, the small gray face plate wasn't available separately. AND... most of the "Hard Parts" for the Islandia hulls were discontinued long ago.
With that said... mine was crushed to death also. I carefully pulled up all the parts, and then reassembled it using thin 3M body trim tape. (1/16" thick foam tape) The original tape was thin, and that allowed the center to flex in... and after +10 years... the plastic just gave out.
While my method isn't the prettiest fix... it is very functional, and it's held up well over the last 3 years.
I'll get a couple pics today.