Is anybody having success foiling with powerbox?

There are lots of powerbox boards out there. I keep hearing that the powerbox is not strong enough for rocking/cantelevering forces.

A few foil mfers are offering powerbox tops with various sizes of flanges. NP, RRD, Power Plate for Slingshot. I might consider using a Power Plate with a powerbox fitting on top. This might be enough to spread the rocking load on the bottom of the board.

There has to be an engineering reason why the board makers are offering foil-ready boards in only the deep tuttle configuration. Well, yes, most foils out there so far are deep tuttle, so the numbers make sense.

So, what about all those powerbox boards out there?

Check out guys... They say no foil box needed... What do you guys think?
www.robertoriccidesigns.com/equipment/wh-flight-alu-hydrofoil-85/?utm_source=newsletter&utm_medium=email&utm_campaign=rrd_windsurfing_year_2018_week_14&utm_term=2018-04-08