Recently changed our vehicle to a Ford Ranger pickup and found it just too high to comfortably (or easily) load our kayaks on top.
We had looked at all kinds of options: j-racks (which we tried), trailer, etc. but because we have a topper on the box, it was just too much to load the kayaks and I'm not wild about pulling a trailer anytime we want to get out. I'm not a tiny person and have reasonable upper body strength but I just found that we would decide not to take the kayaks out because it was too much trouble to load.
Finally decided to go with the hullavators - local shop installed them for us in less than 30 minutes. Admittedly it took some tweaking (moved the positioning of them on the racks) and three loads/unloads before we were happy with the postioning on the vehicle but they are incredible for lifting and strapping on the kayaks.
No question, I can load and unload easily by myself.
Although, as NoNo mentioned, we did notifce the whistling while driving and find it rather odd/annoying. Not sure what is causing it & whether there is anything we can do about it.
So glad we decided to spend the money (agree that they are expensive!) but it lets us enjoy kayaking more frequently!