Best way to temporarily block off heater hoses?

I just loop one of the hoses=water pump to intake.

That's what I would normally do, but on a slant you need a 4 or 5 foot length of hose to loop it around without to aviod the hose folding in the middle. If there isn't much pressure going thru the hoses I will totally do that, but I'd like to make sure first. I've had a hose or two explode before, no fun at all.