How many sheets of material did you guys use to replace your decks?

[Midcap]

Just the front is soft on my boat right now and when I go to replace the bad core I figure I might as well do the whole deck. I am trying to figure out how many sheets for the deck I will need.

[gman 82 aquasport]

My 19-6 used 4 total, but I have the raised area in the front and the front piece used only 1/2 of a sheet... so take yourself a measurement front to back and divide by 48 inches and that's the # of sheets 

[Midcap]

My 19-6 used 4 total, but I have the raised area in the front and the front piece used only 1/2 of a sheet... so take yourself a measurement front to back and divide by 48 inches and that's the # of sheets 

That makes sense to me. thanks!

[Midcap]

1/2" plywood?