I was looking for a solution to carry my canoe without requiring my wife and I to lift it on and strap it to the roof of my truck. The Xsporter Pro seemed to be the best candidate out there. Installation is pretty straight forward but could end up being a task for one person. With two we were able to take it from box to truck in about an hour without any difficulty. I did have to remove a couple of my bed rail cover's plastic clips to ensure a solid fit on the rail, but once they were out of the way the clamps seated down very securely. Because the length of my boat is 16 feet, we stretched the supports out as far as we could front to back. I think down the road if I want to use a cargo box, basket, or bike rack on there I will need to move them closer together, but for now they support the canoe very nicely. The only issue I have had so far with the rack is limited visibility out the back window when the rack is lowered all the way. Normally this isn't an issue, but if I was pulling a trailer I would probably raise it up just enough to clear the back window. Being able to lock the clamps to the rails and the crossbars to the clamps makes me feel very confident that no one will be able to steal the rack or anything hooked to it.
For attaching my canoe, I used 2 cam buckles around the boat and crossbars and a hooked V strap into the lashing points in the rear of the bed. With the load stops adjusted to the gunwales, the boat was as secure as I could have hoped. Travelling 5 hours home in a fairly stiff crosswind, the boat did not move an inch. Some may want to have a front strap on for more security, but with the rear strap preventing the boat from moving backwards I didn't feel it was necessary.
Loading and unloading the boat is also very simple. Once the bow was on the tailgate, it was simply a matter of climbing up and lifting the bow to the rear crossbar and sliding it until it was centered.
Overall, there isn't much I would change about the rack. From the ease of installation to the security of the load, Thule just got this one right. If you are looking at hauling long, heavy loads in your tuck bed, I'd definitely recommend it.