Attention HUB owners

[holehopper]

I was on Fleet Farm's site the other day (they are an Iceshanty.com sponsor) and found something I have not seen before.  It is a "floor" for hub shelters.  Looks like a waterproof carpet type thing that covers a 5X5 area.  For a 6x6 hub, this would be a perfect size as it would allow for a 1 foot area on 2 sides to fish through.  Seems to be about $10 cheaper on FF's site vs. anywhere else I could find it.  Looking around their site, it seems like a lot of their prices are good.  I also ordered one of those Clam pulling harnesses for $25 which is $10 cheaper than anywhere else I could find.  Here's the link to the "shack mat" 

http://www.fleetfarm.com/catalog/product_detail/fishing/ice-fishing/ice-shelters-furniture/drymate-shack-mat

[sunniewally]

is it much different then using a tarp?

[flyfisherman83]

does a floor help with heat that much?