What's a sheet of that worth?I got my wood replaced off my marlon deck at M line with infinity board. It was the best decision ever looks so good and will outlast me.
I bought a used sled deck, wood was completely crap and ready to fall through. but it was cheap 1/2" plywood. I bought 2 sheets of 5/8" fir plywood, painted on the treating myself, and on the last coat I added some grip sand for foot traction. Plywood, wood treat, deck screws, $150- and a half a day away from my screaming kids. why be so fancy.
The biggest killer to the plywood is 365 days a year being exposed to all elements. cover it or don't allow water to sit on it