You don't pour money into a leaky economy anymore that you would pour water into a bucket full of holes. Fix the holes first.
The money keeps drying up because the system is full of holes.
Just about everybody has at some point or another thought about how to game the system. Quite a few people have succeeded at gaming it. So, no mater how much money you pour into the economy all of it goes to them. It's like a monopoly game where some people won and the rest keep on loosing. It's time to bring that game to an end and start over again. Level the playing field. There is very little freedom to compete when a few people hold so many of the advantages.
If your objective is to get your labor force into productive mode, then you make sure that it is primarily your labor force that is getting the economic stimulus money.
Pouring money into our present economy gives it to whom?
Well, let's see, CEOs because they are gaming the system, Microsoft because it is gaming the system, oil companies because they are gaming the system, stock holders because oh gee they take risks, Doctors because they have a monopoly, copyright holders and patent holders because they're often getting disproportionate compensation, more than is good for the rest of us. The list goes on and on: Feel free to add to the list in your comments below.
Our "free enterprise system" has become mostly a system of special dispensations to a few special interests which in turn could care less about the health of our economy, our common good, and are actively ruining the economy for the vast majority of the rest of us.
What to do? Perhaps fixing our regressive tax system would be a start.
Tolls, sales taxes, user fees of all kinds, tuition in state universities might get reviewed, disproportionate labor rates brought more in line to to a new more equitable national minimum labor wage. If our government feels that the minimum wage is enough to live on, well it should be the base line when evaluating what the wages for all should be when dolling out government contracts. Open up the medical schools and provide more aid to medical students in return for service to the poor in remote as well as in urban areas. Municipalities should open up the licensing process for electricians and plumbers as well as other trades. Veterinarian schools should also open up. Anyway, you get the point.
I'm no economist and I wish I could be more detailed because what I see our government doing is deeply troubling.