Not sure about the radio part --maybe this was a discussion heard on the radio?
But generally, you have the power to control the balance figure reported to the CRA's which is used to calculate your util (amount owed divided by credit limit.)
We'll assume that your credit union updates your balances on your statement date. This is not your due date; it's the date that the statement is printed and/or pops up on your online account. Some statements always post on the 5th or the 27th or whatever. Most wander around a few days earlier or later each month. But at any rate, you should be able to look at your statements and make a decent educated guess as to when the next one drops.
Five days before the next statement date, stop using the card. Two or three days before the next statement date, pay the balance down to 9% or less of your credit limit. For your $500 CL secured card, this would be $45 or less. Wait for the statement to post, and presumably for the $45 or less to be reported to the credit bureaus. Then go back in and pay off the balance. (It's really easy to forget to do this --don't forget!
You can use the card a lot during the month on things that you would have to buy anyway: groceries, gas, etc. If you do use it a lot, and especially if you want to be very sure that it doesn't get away from you, you can make additional payments through the month. None of this will affect what is reported to the CRA's, which is that $45 or less figure. Learn to think of your CC as a slow debit card, and don't use it unless you have the money in the bank to pay it off, or you know that you have enough money available in your next paycheck to do so.
Some banks report at different times of the month (HSBC, Orchard, US Bank, I think), and others update a month behind (American Express.) Some limit the number of payments you can make per month, and others won't let you pay more than once every 3 days or something. You'll need to get familiar with any little whims like this that your credit union might have.
Once you have multiple cards, most of us find that we do best to have only one card reporting a balance of 9% or less of that card's CL, and the rest reporting $0. Having all reporting $0 tends to lose you points. This doesn't mean that you don't use the cards; just pay them down/ off before statement time.
In the end, this is one of the best ways to raise your FICO scores, and in the process, it trains you to not carry debt from one month to the next. That was never a great idea, with the exception of 0% and other very low APR's I suppose, and in these times, having debt hanging out there is disastrous.
And you don't need to accelerate repayments on your loan. Installment util is looked at for scoring, but it doesn't carry nearly the weight that revolving util does. If you have extra money available, it's probably better to put it in savings and increase your emergency funds.
Just don't get beholden to CC and loan issuers. Both your credit and your personal finances will be better if you don't.
* Credit is a wonderful servant, but a terrible master. * Who's the boss --you or your credit?
FICO's: EQ 781 - TU 793 - EX 779 (from PSECU) - Done credit hunting; having fun with credit gardening. - EQ 590 on 5/14/2007