Chop & drop
I cut to fit from 1-piece I bought from Cabela's and just laid it down, thinking I could remove it for cleaning easier. The only place it tends to lift is the little area just to starboard of the steps, but it's no big deal. I wouldn't glue it because it would be tough to get up when time came to replace it, plus if it gets really wet inside you couldn't pull the carpet out to dry up. But that's my opinion, for what it's worth.