@Brian Shurtleff nice professional start to your BP posts.. "then the smart people come in" (rolling my eyes). Again, if you use your HELOC exactly the same as your mortgage you lose! I agree with this. You MUST use the "all in one" strategy. This means, just as @Kyle N. mentioned, ALL of your income and savings goes into the HELOC. For example, I have 10K cash sitting in my savings account for an emergency fund.... well now that is sitting in the HELOC to reduce principal by 10K until I have an emergency. And yes the loan can be called in and bla bla bla... but so can your 30 year fixed rate (actually just happened last year to my best friends dad on his 30 year fixed). So this is just a simple question of how much risk are you willing to take. Should every investor use this technique? Probably not. It's like the hammer example.... the tool only works if you use it for what it is best for... could you churn butter with a hammer? Maybe.. but it's probably not the best way to do it. To use a HELOC to make a difference you have to....
1. HELOC in first position (meaning you bought the home with a HELOC, oh and no closing costs, 3% savings on this part that no one has mentioned yet)
2. ALL income and reserves MUST be put into the HELOC (again, how much risk are you willing to take)
3. Use your HELOC as a checking account and pay ALL bills out of it. (You could even do the credit card thing and use a CC for purchases and then use the HELOC to pay the balance each month)
The jury is still out for me on this whole "chunking" technique. Haven't thought about it. I am promoting the "All in one" strategy with using the HELOC only to purchase the home.