Trout River Live Bottom Trailer 

I think it would be cool if they could make the live bottom trailers have the option to operate as an end dump. So you'd have the hydraulic lifting cylinder just like an end dump. If the jobsite was flat, you could operate as an end dump to drop the payload quickly and if it was rough terrain, then you could use the live bottom.

Can it haul wet cake (distillers)

you wouldn't try that with a frameless dump :D