Keep in mind that knowing your contract and he code of ethics will help your more than you know when it comes to negotiation with both your own client and the other party.  

Anyone know a reputable title company or attorney that does high volume work with investors, familiar with double closings and creative (ethical) approaches?

If the listing agent has submitted the offer to the seller and they have not responded back, it is legal, although not really ethical...

I'm required by our Code of Ethics to tell the seller what my opinion of the market value of their house is.  

How could 'ethically' loan officer is working for two companies for same/competing business?

We should not apologize for making profit as long as meeting needs ethically.

We must do so in an ethical manner because those types of investors receive "residuals" by means of referrals.

Sit down with your CPA and evaluate each property in your portfolio to see if you can restructure the ownership into a "Inter Vivos" (Living) Trust in compliance with these regulations.Please note that I will not go into a discussion on whether Garn-StGermain's intended protection should ethically and rightfully apply.But if you determine that on some of your holdings the restructuring makes sense, make the change on the Title.

Additionally after there was no response to an ethical complaint i had against one of their members i saw no reason to renew my mebership.

All they need is a good mentor, and good work ethic, drive and enthusiasm, persistence, and smarts.