Prices from Lake Hill Motors in Corinth, MS
2005 660 Yamaha Rhino Camo - $8,699.99
Green - $7,999.99
This would be the purchase for what you described. Pleanty of power to handle anything you through at it, enough room for all the gear you mentioned including your layout blind, and small enough to still handle like an ATV. Also has enough ability to help out around the camp, or pull your trailor around while helping the neighbors clean sticks out there yard.
As mentioned before these machines are ideal for the duck hunter, as you are not obligated to strapping down your blind bag, and your dekes, and your gun all to the rack, in hopes they don't fall off or get caught between those two trees that are just wide enough for your bike.
The Polaris Ranger is slightly more expensive.
If I was set on an ATV I would get the
2006 Honda Rubicon Green - $6,199.99
The Black is awsome - same price
These are absolutely fabulous bikes. There is nothing in a hunting situation this machine cannot tackle. they are well built, and can handle a couple of size larger tires. They are also strong enough to handle the roof rack you mentioned.
A bonus for the atv is that it will fit in the back of your truck.
Hope this helps

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"I am good at what I do, and I take great pride. But I don't make much money, so I sell eggs and chickens on the side." - WSP