I have been getting a ton of pm's" on what to get" so here is what I would recommend..
Carpet style is made by Lees Commercial
www.leescarpets
Look for a style named Faculty Classic, this style has the "unibond backing" that make this carpet so strong and will keep moisture from soaking into your wood floor. The tuft bind of the carpet loop is very strong, carbides can cut the carpet loops some but the tuft bind will keep the fiber from "zippering" , the carpet will not rip up. I have been using this carpet for years and with great luck. Now the carbides on a mnt sled are not the same on a sled for the trail! so some kind of ski covers may be a good idea.
Once you find a dealer close by where you live. Go talk to them about "short Rolls" Lees carpet will have a ton of short rolls varying from 15 feet to 33 feet. Lees will sell these for a discounted price.
To install the carpet I just staple the edges and at the doors staple every 2" to help keep the carpet down when loading and unloading.
Pricing will vary on size. Get a piece long enough to do your trailer in 1 piece.
Carpet is a great insulator and is a lot more comfortable to change into your gear or work on your sled.
Once I get home I just open up the doors and sweep out the snow and the carpet will dry in a couple days. This carpet will not mildew!
Hopefully this will help you all out. If anyone still has some questions please give me a pm.
I can get carpet for you that live in Wyoming, Northern Colorado, and the Billings area.
Cheers
David