Fish it :
I have a roll on kayak loader for loading my Tandem Island on top of our Yukon Denali. It works suprisingly well, and makes loading the boat and taking it off the car suprisingly simple. I always load and unload by myself, and I'm not a big guy.
The car comes from the factory with a car top rack that is made up of two long rails on each side, with two adjustable aluminum cross bars. What I did was buy one of those T bar hitch mounts to go into the trailer hitch.
I took a 4 ft piece of pvc pipe and pushed it into a pool noodle, I then took an old Hobie canvas sail bag (the blue ones that standard Hobie kayak sails come in), I sewed it up so it fits tightly over the pool noodle, and closed up the ends.
When ready to load the boat I place the noodle near the back of the car on the roof. I then lift the front of the kayak onto the top of the T bar (it's actually pretty easy to lift (about 50 lbs). I then lift the rear of the boat until the bow touches the noodle. I then walk the boat forward, the boat is rolling on the noodle on top of the roof. When the noodle runs into the front cross brace, the boat stops and is in the correct position. I then place the sail and AMA's on each side of the boat, then strap the whole works down with two 1 inch straps tied through the frame of the roof rack on each side of the car. When traveling longer distance (Like down to Key West from Sarasota) I put an additional strap over the top of the rear T bar hitch mount. The boat does not move or wiggle in any way, it is supported by the pool noodle, and the Tbar in the back. Sometimes if the boat is going to be on top of the car for a while, I will slide in a couple more noodles under the boat (lengthwise to the boat between the aluminum cross braces).
The Tbar cost around $70 dollars, and the pool noodles are about a buck each at Walmart.
It's the best setup I have had.
Hope this helps
Previously I had a pair of Malone ss combo rack systems on the roof (about $450 dollars)
I also tried the Malone Saddle up pro system ($159 each) it worked ok but it was really hard to slide the boat over, even harder than the SS combo Racks.
Also the Saddle up pro doesn't have the stinger to sit one end of the boat on to get started loading, like the SS combo system has. That's why I bought the Tbar hitch mount, because I scratched the back of the car trying to use the Saddle up pro. (Wife threatened to take my keys away if it ever happened again).
I have had several kayak rack systems and this setup I am using now is by far the most stable, and easiest to load the kayak onto.
This is our car all loaded up and good to go on our first trip out with the new boat last month