I am also wondering whether the Thule Hullavator (new model) would assist with car topping.
There's a video demonstration midway down the page on this site. I would be interested in your thoughts if you get a chance to watch it.http://www.orsracksdirect.com/thule-897 ... -rack.html
I have my doubts. Notice you must free lift the entire boat up to chest height to mount it on the Hullavator. It appears the entire boat load will be supported on one side of your car rack, at least temporarily -- make sure it can handle the load. The gas pistons only provide 40 lb of lift assist. I couldn't find a maximum kayak weight listed anywhere. The TI may be heavier than what they had in mind.
At least maybe you should call Thule (toll free) and ask them about these matters.
I certainly had my doubts it would work - but was curious to hear what you had to say about it.
From your earlier review, I expect I will be able to load it with the aid of my side extension bar http://www.rackandroll.net.au/
. But will need to get the additional Heavy Load Support accessory http://www.rackandroll.net.au/leg.html
However, given the significant additional weight of the TI hull, I expect flipping it over wil be pretty tuff
I am still planning on carrying it on a trailer most of the time.