I'm using the plastic seat that comes with a backrest and metal drop brackets stock from some stores. I think Dicks has the plastic seat whereas Cabelas has the wood with nylon-web seats, just depends where you buy it from. I think its rated to carry 450 to 500 pounds... I usually have me, a cooler, and 2 fat dogs.. so I'm pushing 400 in there easy and it handles it well. In fact I would say its my favorite boat atm.. I have a super nice and expensive native ultimate that has a super comfy seat, but it just can't handle the weight and doesn't track or glide nearly as well.