They don't understand how to price effectively, study the market, set boundaries with tenants, establish policies and procedures, communicate, and dozens of other things.

What is a good system to create around standardizing rent increases where applicable / best way to communicate it to the tenants? 

Remember, if a deal is truly off market, you have an owner who knows they are able to sell and is choosing not to take the very simple step of listing it.  

You can usually find some events by doing a simple google search.

Yet, many investors overlook simple strategies that can significantly reduce their tax liability.

One small tip: keep your communication channels clear and open with your property manager.

The borrower simple starts remaking payments at a given agreed upon date.

If it's on your credit, you are on the hook for it.However, it shouldn't effect the loan process too much, a simple Letter Of Explanation should be able to get the job done with the correct investor. 

It's a very simple and effective tool that you can use when evaluating rehabs, whether you're looking to flip or BRRRR. 

I recommend a simple spreadsheet to check your math and it will make it simple to adjust each year.End the complaints.