Generally I start the nagging emails and texts after about the 15th of the month and depending on the response I deliver notice by the 18th.

Give them a little extra motivation to maximize property income and keep things running smooth like butter.

If all things are equal consider who responds most timely and do so with a professional tone, text, and/or email? 

Long delays between emails or texts.

Good morning John,I have been here to serve all clientes and always have replied to all emails, calls and texts.

Be aware that 5 levels of membership can create divisions within the ownership group because the same investment at any point in time can behave differently for each class of investor, so motivations may not be aligned. 

Define your motives, and run with it. 

Oh also number one skill to develop regardless of the route you take is being able to identify and get in contact with motivated sellers.

It's amazing how a few conversations with like minded folks can get your wheels turning and stir up that excitement and motivation for investing.

@Arianne L. 100% agree the "why" is what keeps you focused and motivated.