rear backet system for 2015?

I am thinking about getting of of those rack extender baskets that hangs off the rear of the rack for more luggage space. but i am not finding much that will work for the 14’s and 15’s anybody using any of these products?
i am wanting for hunting season, usually i have one large waterproof gear bad in the middle and a 5 gallon fuel tank on each side of the bag along with other odd and end things. I am looking to still have the rack and have the basket for other bags or fuel.