You can send thank you cards and tip during the holidays to demonstrate that you value the relationship, etc. 

Employers had to demonstrate they had advertised positions locally and in the US in general, before they could make an offer to a foreigner.

I've still to meet anyone in 25 years that was able to demonstrate to me that they actually avoided liability not otherwise covered by adequate liability insurance.

If there is a demonstrable need and market for this kind of thing I am willing to explore with you or anyone else who wants to participate. 

Just make sure you get it removed when you've demonstrated your company to be credit worthy.

Just be sure to understand all of the fees associated with using the broker - he/she should be able to clearly demonstrate this for you. 

Once you've demonstrated you pay on time, your LLC now has credit and now you can open an unsecured LOC under your LLC's name.This is a process.

Sometimes, referrals from fellow investors can lead you to reliable wholesalers.When interacting with wholesalers or other investors, it's important to build relationships and demonstrate your seriousness as an investor.

Additionally, showing that you have refined your process over the course of deals to increase yield goes a long way to demonstrate that you care about becoming better at your craft. 

Quote from @Michael Peralta: I understand your position (sort of) but your question demonstrates exactly why you need an agent.