If you're not going to actively create your own works, then generally your best bet is to become a good friend of someone who either does create their own works or have connection to those who do.
While saying that you are a cool guy who doesn't leak should have merit, to most people, you are a complete stranger. There really isn't much weight to your promise not to distribute. I have shared works with people who have no idea on how to mod, those are people that I have dealt with for a significant amount of time and provided an impression that they weren't going to be morons with what I give them. There was a significant amount of time for trust to develop and certainly, they weren't looking for anything out of me.
Of course, I also dealt with people who received my works off the basis they said they wouldn't distribute. Now I have a retarded situation with my collection of mods floating about. I'm not saying that will be the same for you, but generally, people don't like taking unnecessary risks.