Jacking Car up while slammed

[72Spitfire]

It's a pain in the arse. I'm looking into those ultra low profile jacks as both my cars sit so low. I think Craftsman makes a low profile aluminum jack. Or....drive it up on boards or something.

http://www.sears.com/shc/s/p_10153_12605_00950165000P?vName=Tools&cName=Auto&MechanicsTools&sName=Lift Equipment & Jacks&sid=IDx20070921x00003a&ci_src=14110944&ci_sku=00950165000P