Clamps for resin infusion

What do you guys use to clamp off your lines for infusion?
I tried using C clamps and blocks of wood but it’s extremely unwieldy. One of my clamp fell off the table and broke the line ruining my part.
Is there something easier to use?

A plastic rubber brake hose clamp. They don’t damage the lines.

Locking pliers made for clamping welded parts. They have wide flat jaws that close of the line really well.

http://www.mcmaster.com/#catalog/116/2747/=61j4bt
pinch off jaws. Nice tight pinch, won’t damage the tube.

http://mountainhomebrew.com/ProductImages/equipment/728.jpg

Has anybody tried one of these? I’ve seen them in wine making kits, not sure the “technical” name for them, though.

i’ve seen people use them if you use the flexi clear tubing. Personally we use LDPE tubing, you need a vice grip!