It is your nickel and your boat..... How long do you anticipate owing it? For me I chose marine plywood, in the thickness the matched the original plywood. I then used four coats Old Timers Formula to seal it, replaced the carpeting and never looked back. The extra I spent on the plywood was a...
The fit doesnt have to be perfect.
The knap of the carpet covers some minor inperfections and the difference in dimenstions from the top and the bottom of the sheet goods.
Just out of interest watch this video
there is a very short spot of them carpeting the boat floor.
when I did this I used a 4 ' x 8' x 1/4" tempered hard board, I went from rib to rib, measured the spaced from side to side and halved it. I superinposed the measurements to the hardboard and used flexed a thin strip of wood to connect the dots (so to speak). my boat at its widest was wider than...
Here is a link to a resore I did on an 81 Pike.
https://www.tinboats.net/threads/the-life-of-a-1981-lund-pike-dlx-16.43801/
You appear to be starting out with a much better boat tha n I did.
Have fun and take your time, the reward is worth it.
I did pike rebuild a few years back.... I used 5/8" marine plywood, because that was what Lund used originally.
Some where onthis site is write up of my restore process... I think the label was "the life of a 81 pike" if you want to look at it...