I am looking for a kayak rack, ideally to hold 2, but I can get by with a single carrier. Most of the 2 kayak rack styles have a central post and the kayaks will load on their sides which would seem to be the worst for aerodynamics (which probably does not matter so much once a 50lb kayak is strapped to the roof). I am guessing that the lower profile ones where the kayak is either upside down or sitting normally would be better with regard to airflow, and not causing a problem with crosswinds. My current kayak is 10' x 28" Right now I am stuck between these: Inno dual carrier (INA450) Inno locking carrier (no pads) - I will probably buy some foam v shaped blocks or wrap around bar pads if I go this route. I am not committed to these, they just looked like the best for the money and have good reviews (any suggestions would be great).