On Amazon search "Malone Kayak Lift Assist Auto Racks K-Rack Load Module".
I put a 13.5' 75# 2 person kayak on top of my F-150 with the tall Lear cap by myself. One unit sits on the hood, just above the grill. The other sits at the top of the windshield. Works great for me. You will like everything about it except the price.
2001 Ford F-350 Super Duty CC Dually, 7.3 Diesel
2013 832IKBS Flagstaff Classic Ultra Lite, Hensley Arrow Hitch, Carlisle tires
2016 days camped....211, it ain't over yet!
On the road to ALASKA May 6, home Sept. 13, 2016. 23 states, 3 Canadian Provinces, up to the Arctic Circle, 17,300 miles, 131 days on the road. 1 flat tire, 4 oil changes. What a beautiful trip!