We have a Goose Box on our new Pinnacle. I already knew it was approved by Lippert when we bought it last spring but the dealer insisted on calling Jayco before he would install it. No problem. The Goose Box has been available since 2012 if I remember right and you will find very few complaints. I've had all kinds of hitches thru our rv career and the Goose Box is by far the easiest to hook up and leaves my bed clear when I remove the 5 pound ball. Our last hitch was a Hensley Trailer Saver BD3, an absolutely great hitch, but I could no longer remove it without help. The ride we get with the Pinnacle, our truck and the Goose Box is the best we have had and this is fifth wheel number 6 for us.
I think you will find the Gen-Y is not approved and Lippert/GD will tell you it will void your warranty. I'm betting this is because Lippert has a financial stake in the Goose Box. We do use safety chains with ours but no big deal with the puck system in our truck.