For example if I want to utilize the BRRRR strategy I will eventually need to pull out cash to reinvest.

Current rates do not help your case around cash flow, but I like the strategy you are promoting for room to room rentals.

Quote from @Carrie Matuga: @Namal Burman San Diego is one of the top House hacking markets, if that is an options for you, it might be worth looking into.Can you please elaborate on Housing Hacking strategy you are referring to?

Especially if you set up with the lender going into it, but set it up as a 'delayed finance' that would recoup ~85% of the purchase price along with a small rehab escrow to reimburse you for the rehab that you plan on doing.Then, just set up with the lender that you are working with that your exit strategy is to 'refinance', which is true, but then refinance with a conventional lender and everyone is happy.Is that along the lines of what you are planning? 

Property's over there do not require nearly as much customization and theming, but should still have a design appeal so that you can generate the highest nightly rate possible.

There are many other loan products available in addition to Creative Financing methods you can learn about that don't look at your DTI and are "asset based".The ideal loan product really just depends on what strategy you're looking to implement, BRRRR, Fix/Flip, Short Term Rentals, etc...HMLs(Hard Money Loans) can be helpful for Acquisition but depending on the price of the property, the fees can eat up much of your profit, especially if there's not much "meat on the bones".

Simplicity and excellent customer support are important factors. 

Looks for development opportunities to build new communitiesAny other suggestions on strategies that have worked for you?

My customers find me mostly through referrals from other owners and people I know.

Those are custom made so not many will be lying around.