Please note that this carrier is clamped around the roof bars and therefore will not fit to Dropracks systems and Thule Slidebars (you need to attach gear to the T-track channel on these bar SUP and board carrier; canoe and kayak carrier; watersports carriers and accessories > For the vehicle roof (fixed to a pair of roof bars, so look out for our money saving package deals) or else lifted up from a pickup bed. Be sure to use tie-down straps at front and back!