But ...using his techniques and working my a** off, I've done some deals.

I would expect any wholesaling guru to be able to sufficiently cover the basic technicals of it.In my opinion, the main factors to look for in a wholesaling course are the techniques for finding deals and for finding buyers.

I have seen people do well with this technique, but it is also harder than it seems, and filled with problems that can trip you up as a new investor.

This reminds me of a BRRRR technique brought up with regard to refinancing where -  100% of HUD being able to be pulled sooner than 6 months (delayed financing). 

You can't apply techniques of business without a basic understanding of business.

As @Conn Gerrard mentioned, think of creative financing techniques to buy the next one. 

Good Morning BP,I am new to Bigger Pockets (first month newbie) and in my "baby steps" stage of learning as much as I can about various RE investing techniques and tactics before I take my first plunge.

This technique works more often than you think, especially when the numbers are tight.

What other marketing techniques could a rehabber consider?

Nothing exciting has come from it yet -- we're having trouble balancing good marketing techniques with the requirements our brokers are putting on us, so we'll likely be getting our broker license to give us more control and hopefully improve our direct marketing success.- We've built a team to rehab our Milwaukee property and kicked off work.