I opened a Lowes business account and gave him flexibility to buy materials that he would need to be successful in the job. 

That is they can be more flexible with their terms because they are portfolio lenders.

This model offers flexibility to homeowners who regularly use their vacation homes because they can open up their rental calendars only for days they won’t be using the property.

The more equity the owner has is more flexible for your deal presented.Building a good relationship with the owner or selling Agent will most oftenly be to your advantage.   

This allows flexibility in the future. 

When you're getting started, building some steady cash-flow is incredibly valuable because it offers you some flexibility and a safety net to take on higher risk/reward opportunities.However, if you think you can get those kind of spreads on wholesale deals, maybe putting a few thousand into marketing is a good idea, too. 

If a tenant says I don't want someone in here without being home I ask how flexible is their schedule?  

A few flexible structure options with stated income (5/1ARM and fixed options).

It's also great if a tenant can't pay, it gives them flexibility to use a credit card if needed. 

We should be able to squeeze something in if you're flexible.