HELOC paydown strategy

[Dean Klein]

I've got a HELOC balance of 60k at 5% interest and the monthly payment is 1% of the balance so around $600 a month. Normally when my rent comes in every month, I have 6-7k leftover after my mortgage payments and other expenses come out, I thought about throwing 90% of the leftover funds towards the HELOC balance every month, and use the HELOC as a checking account of sorts, mainly if I had some big ticket expense that I wasn't expecting, I would just transfer that money from the HELOC back to my main checking. I haven't seen this discussed here, so I am wondering if anybody does this, and if it makes a big difference or not?