I'm planning on putting a casting deck on my Jon boat and carpeting it along with the middle and back sections. Where is the best place you've found to get carpeting for a boat price wise? Thanks.

Go to your local carpet store.  When I worked at one a while back we had boat carpet in the back in both 6ft and 12ft roles.  See what they have and the cost per square foot. I know you can find it at several outdoors stores as well as home improvement stores, but I would price shop it and the people at the carpet store will steer you to the proper adhesive to install your deck carpet.

Jon boats aint that wide, I bought outdoor carpet remnants for next to nothing, it's been 5 yrs & still looks good.

Henry 663 Outdoor Carpet Adhesive

I have found that carpeting designed for professional golf applications and putt putt golf courses is some of the best made for this type of thing.

 

The carpet I use has 1/4" foam rubber backing that quiets noise and is cushy to stand on and I even use black that does not get too hot to touch or stand on in summer heat here in central Florida. And since it is designed for professional use, it constructed better, holds up better and I love the stuff!

 

And you won't find this carpet at your local Home Depot or local carpet dealers. Gonna have to hunt down the sources golf courses and putt putt places get theirs from. I can't help you there as I got mine for free at a PGA tradeshow I worked at a couple years ago. The corporation across the aisle tore their booth down, yanked the carpet up, rolled it up and tossed it in the aisle marked for "trash" and I took it all home and installed it in my boat and have been very pleased with the results and that I have enough to do it a second time stored away in the garage.

I bought some indoor/outdoor carpet from the local Home Depot for mine. It was something like $.28/sqft which is a heckuva lot cheaper than "boat carpet", I'm not even sure the true difference.