I finally got one end of the bottom board loose! I try not to make horrible loud noises when the ickle doglette will object; also, I need to move the other bits of lumber out of the way so I can get the other end to drop without stabbing me.
Sides can be removed fairly easily if you need to haul something large and flattish (although the instructions were a little vague about how they assemble).
Look on FB MP, they are often cheaper on there. The new carts start at about 100 and go up, the new ones at Lowes are up to 450 for some of the trailer ones, its stupid.
https://www.lowes.com/...