I am now embroiled in a situation at my Florida condo where I have been fined tens of thousands of dollars for violation of a new rule.

What you will learn from YouTube (even if you are unable to completely address the situation yourself) are things like: what caused the problem in the first place (so you can prevent it in the future), what is the cost of fixing it yourself (as a reference point in the future to determine if it's worth hiring someone else to handle it), and basic diagnostic/problem solving skills relevant to whatever you are having trouble with.In regards to how to handle the tenant: It is critical that you set and manage expectations.

That worked out OK since I knew the area really well and own other properties there, but I would have been really concerned to use that agent in a situation where I didn't know what was going on.  

If you're highly cash-flowing as you say, stop messing with banks. start working with lenders that are tailored to your needs and situation as an investor.

After a stressful couple of days, my offer was accepted on 2 duplexes in Columbia, SC. 

My question is, how many of you that are using these creative finance techniques have actually put some proper stress-testing on your portfolio?

In the past, I have adjusted the due date, set up 1099 type tenants on a quarterly payment schedule, requested (and received) 2-3 months rent in advance, sold the property via lease/option, etc.I get that the norm is rent due by the 1st, late fee accrues on the 6th, but this tenant's situation apparently doesn't fall into the normal category, so ask the question, then evaluate whether you can live with (and accommodate) the answer.Good luck!

A good strategy is to compare areas and see which best suits your situation and then become an expert in that neck of the woods - find the best investor-focused realtor, etc.About your second question, I am not a lawyer or accountant so you will need specialist advice there. 

However, in your situation, it is a disagreement on the leasing price, I would think in this situation, your tenant should vacant the property by the date the lease is over. 2) Do I have the right to not renew the lease, given that I do not agree to their counterproposal?

I'd give him the legal notice, and return his deposit (yes, it will be painful, but if you don't have proof, IMO it's a lost cause, not worth the hassle/stress) , and offer him a sliding scale, $400 if he moves out next week, $300 if he moves out in 2 weeks, $200 if 3 weeks, contingent that he cleans up the place too.