I want to continue to expand my portfolio I am reading David Greene's BRRRRR book right now and I really want to implement that strategy, can I do a HML or something similar to continue adding to my portfolio?

How can I improve its support, seal it and prevent further erosion? 

Drain your water heater to prevent hard water build up7. put in a couple of USB outlets in the home, renters will appreciate it since they all have phones and tablets they want to charge8.

Is anyone else that wholesales implementing this approach?

Real Estate Investing Is a business, like any other business, ( needs attention, love, systems, and diligence) if none of that is implemented is just a gambling game. 

Obviously, with the baby, our sense of danger is a bit heightened, which I think sometimes prevents us from looking at things rationally.We're totally happy to borrow.

Are you aware of any foreclosure laws or mortgage loan laws that would prevent this from happening?

If you start trying to implement different ideas without having the full picture you can run into an issue down the road.

There is a wealth of information online but reading a book, attending a seminar or watching a podcast is useless unless you take that information, determine its usefulness, and implement those things that can help you on your path to build a business.

A general contractor knows how to stage a job to prevent overlap of trades.