Read reviews for the Big Tuna by Jackson Kayak as submitted by your fellow paddlers. All of the reviews are created and written by paddlers like you, so be sure to submit your own review and be part of the community!
Like some of the other reviewers, I would say that it tended to drift a little. Think that might be due to the design of the underbelly and the length of the Tuna (14'1"), especially in a current. Because I didn't know how to set it up correctly for two paddlers, that effort was a total disaster. Due partly to the fact that the dealer rep failed to supply all of the parts necessary for a two-person setup, or check me out on how to perform the setup - duh, go to the Jackson website. I later got the parts I needed from the dealer rep and checked out the Jackson website. Well 2 months later I still feel like I haven't given my Tuna a fair chance, but I don't plan on selling it anytime soon. Pretty sure it will meet my needs once I get straightened out on how to use it.
Don't know if this helps anyone else. Maybe learning from my mistakes will get you better prepared to make your kayak purchase. Before you buy, make sure and check out that Jackson Kayak website for a professional explanation of their fine products, of which the Big Tuna is just one!