I found one for this, which seems pretty decent.
The other one in question:
No reviews that I can find, and seems kind of cheap.
Pop's gave me a $100 gift card to Bass Pro, so I'm lookin' around. I'd really like to get a hard tandem sit on top, but for the price of these, I might just pick one up. I'm leaning towards the Colorado. It looks more comfortable than a hard plastic sit on top too...
What do you guys think?