The whole voicemail thing might be a significant enough "barrier to entry" for some of your future renters, as they are no doubt looking at many other places and you don't want your property to be the fruit way up high in the tree.  

Don't put all your eggs in one basket either....

It's not a passive business, it's an active business which can be fruitful for the few, painful for most. 

However, we will not put all of our eggs in one basket either when it comes to HML's.

At the time it felt like it was the peak and I didn't want to risk making a large down payment on a single property and having all my eggs in one basket.

I can think of some pros (better deal, quicker deal, less carrying costs, etc.) and cons (interest rates possibly going up, all my eggs in one basket, etc.) to both, but I am curious to hear from others to get their perspective.

Also, work your lists to target people who aren't being pounded by your competitors already, the lower hanging fruit.

I'm a great believer in going all over in, as long as you don't put it all in the same basket.

I've been HML for several years now and can tell you it's been a fruitful venture. 

The only other caveat is that the committee won't release more than 10% of the balance of the trust for anything (other than college) because they dont want "all the eggs in one basket."