Alan, I just went back and reviewed some material I have from Michael Fortune. Take a look at how many clamps he has to ensure that the pressure is distributed through the laminate assembly. Also, notice that he has an interesting caul assembly: a strip of bending plywood with blocks, then some padding (likely hardboard or bending plywood), then the laminates.

bending caul.jpg

He does have a reference to using a pressure hose, but warns that it can be very dangerous...

Mike