You people that have jumpers, I would train them and highly encourage them NOT TO JUMP! My husband made a ramp for our bed, and then for the living room couches, he thought of the brillant idea of taking a car ramp (he had about 6 of them outside...we live in the country and he's always working on cars) and putting a non-skid rug on them. They work great! Better than the ramp he made, even. I just used bathroom rugs. And you can get the ramps at any auto part store or a Walmart....they only cost about $30 for a pair!
But, please, don't let your babies jump. You can train them not to.