Filing a formal complaint carries more weight than you might think and they all don't take a year, this is pretty easy to confirm since the time and date is on your contract.

Per unit of weight and volume there's no comparison. 

If you're good with people leasing agents are worth their weight in gold (although under compensated).

Neither of these arguments carry any weight in this context when you compare it to what certain tenants have had to endure.  

I haven’t tried any of the more costly and curiosity peaking items like a branded pen (refrigerator magnet – whatever) in an envelope.I set up numerous criteria prior to downloading lists and  with EXCEL focus/target my marketing (not necessarily in prioritizing sort/elimination order): Home with median price range (~+/- 1 stdev),DOM (MT & LMT)evaluate %equity (much of the data sketchy for 2nd liens)evaluate $/sqft (most data sketchy sqft)Zestimate,Target "B" areas,weighting and distinguishing between key words in remarks for distinguishing between motivated buyers in distressed or good/ARV properties,days to auction (don't even try if < 10 days - might consider working with someone that has expereice in solving that issue expediently),eliminate ARM mortgageseliminate banking institutionsremoving returned mail from lists ...

If you find a high quality PM, they'll be worth their weight in gold and can truly make your investment passive. 

I'd recommend at least a $250 non refundable pet deposit, depending on the size of the unit you might consider a weight restriction, I don't have one but sometimes they make sense. 

Not even the 80/20 rule with realtors, more like the 97/3 rule in my experience.A good realtor, better yet a good realtor that is also a good RE investor, is worth their weight in gold.

They clearly put too much weight on them and they ripped away from the wall.

I have talked with several brokers who have explained that road access, water access, well depth requirements, building laws exc. influence value the most but I am having a harder time ascribing weights to these variables.