I have been using EZ-Vee kayak carriers for many years to carry surf skis, and they work really well. They allow me to carry two surf skis at a time on a short roofline car. The bungee attachment system is really convenient and easy on the boats; I use three of the bungees in the front and two in the back, and I've never had an issue with retention even when driving on the highway. I do use straps with larger volume surf skis, because the bungees are a bit short for higher volume decks, but using straps is really convenient as well. Being able to carry a 24.5 foot double surf ski on a short roofline car is the best (I do put a line on the front of that boat). The finish has proved to be very durable over the years I've had the carriers on the car, in all weather. Kayakpro is great to deal with if you need new pads, different attachment adapters, etc. They are not cheap, but they carry expensive carbon boats safely so they are worth it and deserve 5 stars as far as I'm concerned.
Here's some photos of the setup on a Mini Cooper:
The Mini factory bars remove completely in a couple minutes. I leave the EZ-Vee attached to the factory bars permanently, so the whole thing lifts off in one piece, which is very nice. I had to make custom attachments to mount it on the factory bars, which was not too hard.
If you had to remove the EZ-Vee from the bars, it would take a while as others have noted - there are 8 big Allen screws holding the EZ-Vee to the bars.
Addressing the issues raised above:
Bungees - the 4 that came with the rack have never failed. The bungees work very well to put the boat on the rack quickly on a windy day - no boats blowing away. That being said, I wrap a 9' NRS strap twice around the boat at the front and rear over the bungees - this takes about 2 minutes. But to be able to put the boat on the car, attach the bungees and then do the straps later is really nice.
The bungee issue is a non-issue - people talk as if you are required to use the bungees, which is silly. You don't have to use them if they make you nervous, and in my case they are a backup system to normal straps. This should not keep anyone from using the system.
Boat size - my EZ-Vee Plus holds all 3 of my boats - 14'1" x 25", 13'9" x 23" and 17' x 22" - so short fat boats are not a problem. (only one boat at a time, of course!)
Hull damage - hasn't happened yet. I have added pool noodles over the straight mounting bars and strapped them in place with zip ties, and replace them when they get worn. This seems to solve the issue of stress concentration.
In addition, the EZ-Vee itself acts as a suspension, reducing stress on the hull. The boat is attached to the ends of the carrier which are 8' apart. The carrier is connected to the factory bars which are about 3' apart. When the car bounces around, the whole rack system can flex up and down an inch or two, absorbing a lot of the vibration. For saddles that are connected directly to crossbars, that vibration is carried directly to the boat. Also, the Vee parts are movable, so you can set them at the bulkheads if you like (I don't bother).
I like the system (obviously) and will be adding a second one to the Mini this spring. It's pricey, but the fact that Thule has copied it (not very well, by the looks of it) should tell you that the idea is good.
OK, sales pitch over - and no, I don't work for Gray, but he is a nice guy to deal with.
Likes: Once the EZ-Vee is installed, the kayak can be loaded and secured quickly with the bungies; No bowlines; Seems to be well-made.
Dislikes: Not only expensive, the actual cost was higher than what was advertised on the Kayakpro website; The minicell foam on the "vees" is not strongly adhered; The rack does not install quickly (eight allen head screws)and cannot really be left on the vehicle when not in use.
Rating is for product only. OK overall, but with some definite trade-offs compared to other alternatives. Moreover, I would have to disagree with the Kayakpro's website calling this the "ultimate kayak transportation."
Kayakpro.com still shows the incorrect price despite my complaint when I purchased mine awhile back (I still had to pay the higher price). Rating: 6 of 10