Anybody using one? Did you have to drill holes for the safety chains brackets?
(from the ad on ebay)
The Turnover Ball is an easily-installed, complete gooseneck hitch that bolts to the frame of your truck using existing holes. The Turnover Ball comes with a removable 2 5/16" ball, and is rated for 30,000 lbs. towing and 7,500 lbs. tongue weight capacity. The ball stores upside down in the socket when not in use, leaving a flat, unobstructed bed floor.
They install in about an hour, with no welding, using normal hand tools, and a 4" hole saw. The hitch assembly simply bolts across the truck frame under the bed while the bed is in place -- the only modification to your truck is a four-inch round hole in the pickup bed floor.

 

We had both ours installed soI couldnt tell you. As for the hooks, we dont use them, guess our trailers wiegh enough we just dont expect a bump big enough to lose then off the ball.

 

yeah, you gotta drill holes, no big deal though

 

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Ihave pics of my B&W installed in my profile yes you have a total of 5 holes to drill in the top of the bed but no frame drilling and it is very easy to install