Only on repairs. Generally, I use two thin strips of wood about 1/4" x 1.5" x 70" cut in half, and one on top 1/4" x 1.0" x 70 cut in half. Wax paper under the pressure strip, and 80 lbs pressure in hose above.
The top strip puts pressure into the center, as the hose is inflated.
If you cover the bottom strip with electrician's tape, you may dispense with wax paper, or clear wrap.