The hose clamps that are the spring type, not worm gear type, can be better to use as they are more completely round shape to compress evenly and not leak.
I have had some made for fuel line hose that was not very malleable at all. I would not buy it again. Black rubber meant for fuel line I use. If clear is wanted, I would want to be sure it is not like the small prepackaged stuff in the HW store that leaked. There is the name brand Tygon tubing and if you find they have ones that are clear somewhat malleable and are approved for gas that might be worth it.