The hose is 3" ID by about 5 ft long. We buy in bulk, but you can get small lengths from McMaster Carr.
McMaster-Carr
We install this (fiberglass angle) bracket when the body is upside down and we're putting the Coremat in. As a one-off, I'd epoxy in a small block of wood with a screw-eye. Just locate it where you want the hose highest. We just use a long wire-tie to hold everything together.