I pulled two diesels on it with my 05 Dodge dually just fine. I just got the Kodiak fairly recently to match the camaro next year.. The dually set on stock actually had more power pulling up hills than the kodiak.
I hauled two trucks at a time to the drag races.. The deck over the gooseneck is great. You can put a lot of chairs up there, and have a much better view of the action.. It also has a lockable storage compartment under the gooseneck.