This info will lead to several options being removed from possibility.The best software options are designed for PM companies and can cost a decent amount monthly.Here's some cheap options:Doorloop, Hemlane, Innago, RentRedi, Stessa, Avail, Apartments.com, TenantCloud, TurboTenant, Buildium

Over the past three years, I've been using most of the major off-market techniques.A standout method is always pulling data and feeding it into a call center to generate off-market leads.

This also leads owners to ASSUME simpler is better when it comes to management contracts.

On the other hand, I have not received any response from leads in Furnished Finder as a mid term rental.

We have one of the leading 3D Home companies near us in Northwest Ohio.

This also leads owners to ASSUME simpler is better when it comes to management contracts.

Lately, my lead flow has struggled (CTR-ALL has been declining and CPL has been significantly increasing). 

I'm currently using a PPC company, which has been generating leads and has been very productive so far, but I'm looking to add to our marketing funnel and bring in more leads.

House hacking is perhaps the best way to get to cashflow other than buying off market (most likely finding the lead yourself) and doing a ton of work to get it rent ready, which is obviously cash intensive and time intensive.

I highly second @Kwame Amoako and recommend starting with a off market direct to seller campaign to generate some leads.