Bucky, sometimes words have different meanings. Look at the standard features on this trailer and you will see "dovetail" mentioned. Which is the drop at the rear of the trailer to make loading cars easier.
Bed sloped down at the very back of the truck bed, downhill on a slope seems like a good reason, but if it was necessary I would think a regular truck bed would hit really easily.
I call it a dovetail because when the back of a flatbed trailer does that I call it a dovetail
Do you mean why does the bed slope down? Thatโs for maximum clearance to a trailer when making a turn that is a sharp downhill.
Or do you mean why are the corners clipped at 45 deg? That is for clearance to stock trailer landing gear which is often a single heavy leg in the middle.
Or do you mean โdove tailโ which is widened out like a Y- like the joint cabinet makers use? Donโt buy one made like that ๐ Lol