certainly do NOT clamp the brake hoses... first off, it will not work. the hose is very hard, and reinforced. second, the hose is very fragile, and is very likely to be damaged by even hanging the weight of the caliper, deliberate clamping of the hose is highly unwise.
are your hoses new? 10 years is about the max on the rubber on these hoses, so replacing them when you change/rebuild the caliper is good medicine!

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 560SL convertible
1987 190D 2.5-5SPEED!!!

1987 300TD
2005 Dodge Sprinter 2500 158"WB
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

The hose is only 6 months old, so I definitely don't want to damage it. I've taken tangofox's suggestion which is an easy under-hood approach, so I won't even have to touch the hoses.

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05 E320 CDI - 185K miles
82 300D - 200K miles (sold)