For the material participation test, the easiest way to get it is Via the 100 hours and worked more than anyone else.

When looking for a property to purchase, make sure you take this into account. 2) The BRRRR method is really hard to do in Bing, especially in student areas.

I see you mentioned the BRRR method, here's a nice breakdown of it here on Bigger Pockets.   

If you haven't got keys, evict for non-payment as its the easiest Eviction.

That is the Safest and Easiest thing to do for your Investment Portfolio.

I have used several methods that have been quite fruitful over many years. 

I remember seeing this method in many popular books and podcasts.However, the STR world has changed so much ever since with its exponential market growth.

Only one of these methods involves "saving" money, and most BP users don't pay enough attention to it. 

Easiest and least costly is to go there and spend a week or so to get everything in order.Another one is to hire someone trustworthy and pay them to put it in their garage or in a storage unit for a month

You might want to start investigating methods for locating off-market opportunities that appeal to you.