Ok I just ordered one with the 20% off and free shipping. Should be plenty of room for my groceries. Rob how did you attach it? I bought the wrong Tusk plate for a 2016 but was gonna make it fit. But if I need some 1/4" alum plate instead to distribute the weight then please do tell.
First try at making my own luggage rack so just bought some 1/4" 6061 aluminum plate 12" x 20" to support the most of the box's width. Like MrRobb has described in the past, some of the V600 will sit on the pillion as I don't want a huge whale tail sticking out the back either. After looking at different designs, I plan to get some stand-offs, bolts, etc. and will post pics. Also bought some white spray paint for the top of the case to keep the sun's heat in check for grocery runs and need to get a thermal lined bag for frozen food.
Undecided on a sub $300 pannier rack. If anyone can recommend I am looking for sturdy and easy install.