Now that I think about it, there's something about this cashbond trick that I don't understand.
So you have 100k saved, or from equity in a LOC. You use that to buy cashbonds which returns you roughly 20k a year. That 20k a year boost in income gives you roughly 5x borrowing power, which is 100k...but you started with 100k to begin with...? If it increased your borrowing power by 10x I could see the sense in it, but doesn't this just bring you back to square 1? Obviously I've missed something?