Homeless shelter's don't help, they're ridiculously dangerous to be in.
You need to do more research on the topic. VICE has some decent documentaries on the issue.
Then solve this problem.
The problem I constantly see with homelessness in America is that municipalities constantly half ass every attempt to fix it, and then throw up their hands and say "well that didn't work, I guess there's nothing we can do!" Building homeless shelters without making them safe places to be is the perfect example of half-assing. I mean ffs, it's in the name: shelter. A homeless shelter not being safe doesn't mean that homeless shelters don't work, it just means your execution was shit.
In contrast, some of the other homeless "shelters" I've seen are just barely funded enough by the city to keep the roof from leaking and the lights on with minimal staffing. That just doesn't work.
But if the only response to “how can things be done better” is “send more money”, anyone who has been on the funding side of things will just move on.
Not “half-a*ing” things doubtless has a lot of components. If you are as successful in your shelter as you say, you have a bunch of proven best practices that can be implemented by other shelters and those who certify them. What are those? How can a funder support the implementation of even one of those specific ideas? That will bring out the wallet faster than a blank check appeal. (Are there even certification and rating programs in this space?)