Surfing Waves

Looking at getting these for transporting 2 minimals to and from cornwall.
http://www.surfdome.com/fcs_roof_racks_-_fcs_double_soft_with_cam_lock_roof_rack_-_black-31536
Anybody had any experience with these softracks?

i had the rhino set that im looking to sell, but i used mine to transort 2 minimals to and from devon, and aslong as you have it nice and tight its fine. but not so good in the rain.