@Clive Smith I have a sample log in format that follows the IRS Audit Techniques Guides (ATGs).

Correct, but according to the IRS Publication 5653 Cost Segregation Audit Technique Guide this IRS prefers an “onsite” visit.

.), or if there are newer techniques that deliver better ROI. 

I understand that many use different types of marketing strategies to generate leads, and I want to learn more about which methods are considered the most effective today. ( without considering budget ) Specifically, I’m referring to direct marketing techniques (not networking or referrals).

There are a lot of ways to buy properties. Some ways are best for single family residences, some for multi-family, some for commercial, some for Short Term Rentals, some for manufactured, some for land, some for build...

Anyone building a portfolio based on this technique?

You don’t have to do all of these, but you do need to do quite a few to become a roaring success in real estate investing.You can uses these techniques from California & Idaho to Maine & Georgia and from Washington to Florida and almost everywhere in-between.

I continue to use many of these marketing techniques and thanks to Blair have even more "tools" in my swiss army knife rather than just being a "cash-buyer" I am able to confidently close deals using many forms of creative financing. 

An LLC doesn't complicate financing, it's often the expectations of the borrower believing it's the LLC that's being approved for the loan and unwillingness to turn over necessary information for underwriting or seeking out a loan product not intended for LLC's. 

Quote from @Laura Newton: Quote from @Sean O'Keefe: Quote from @Nick Liao: Hi, Sean, I would greatly appreciate it if you could send me one copy too.Sure, I just sent you the sample material participation activity tracker / REPS Log that follows the guidance suggested in IRS Audit Techniques Guide (ATG) @Sean O'Keefe can you please share sample material participation activity tracker / REPS Log that follows the guidance suggested in IRS Audit Techniques Guide (ATG)?