Neil, as with t_vargo's V1 it looks beautiful. Even if it does not support fully attached flow all the way back, it's still stuffing the wake over a tonneau. My hesitation with this basic approach is utility of the truck bed. How to get stuff in and out of the front of the box, where you want most of your weight to go (ahead of the axle) ideally. Maybe if it slid back then tilted up as well?
