Most traditional programs struggle to do them.

One of the reasons for getting my license is because time and time again you hear how investors would love to work with investor friendly agents.Another reason, apart form the MLS access, is the option of potentially wholesaling properties for sellers that don't want to go through the traditional means.

The mortgage companies Ive contacted have told me that I have to wait for 7 years to get a traditional mortgage and I'm trying to get around that.Any advice is appreciated!

You can cash flow in areas of the central valley.. although as James says you will simply buy them through traditional brokerages who will then refer to PM's...

One is Traditional, the other is creativity. 

This allows the REI to gain compounded returns instead of the traditional linear returns.Deals are not found, so don't bother looking for them. 

Manufactured/Mobile homes cannot be transferred from one proprty to another and receive traditional financing. 

Are you traditionally employed from 9-5?

Yes, you are correct, 1st mortgage HELOC's can have huge advantages over a traditional mortgage, provided it is used in the correct way.

Most "Traditional" lenders and Mortgage brokers don't want to take the extra step to lend outside of their regular box.