YZ...I used a floor product that I bought from Sam's Club (of all places). G-Floor - Garage Floor Cover/Protector - 10' x 22' - Sam's Club
The flooring is fashioned in place with some carpet strips located in key places to keep it from shifting. I did the entire install in this material and by cutting carefully and using some layout thought the 10x22' piece did the whole job in my 34' Bounder. I paid $230ish with shipping for the flooring and an additional $100 in strips, screws and trim pieces to make it fancy. I will shift this conversation to a different topic area of this site. We can chat indepth about my install and perhaps it will spark some ideas that will move you in a direction that makes you motivated to finalize your project. My philosophy
of increased security by getting my expensive cycles off the tail and in the RV is a good idea for my life style and my peace of mind.