So last year i did an install of Miners Moss- its a poor man's version of deckadence. it comes in 3'x6' rolls that you have to splice together.
Link to the rolls - Miners Moss They also carry this in blue and green
to glue the two sheets together i used a plastic adhesive glue - basically plumbing glue but colorless - follow the directions from deckdence to splice it together.
I started by trying to template it with plastic paint drop cloth and this didnt work too well so i ended up just cutting it in place in the boat and it turned out really well. I have to get another roll to finish all the way to the bow for for now i'm not overly concerned with updating that part.
I may add a backer to it to help hold it in place this year as it did slide around a bit last year - 2019 i'll probably rip the carpet ou and just have this, but currently it just sits on the carpet.