Borrow from LOC for IP repairs and costs?

Hi
Please assist with my dilemma.

My Current Loan on IP - $288K (IO)
LOC - $50K

As per
"http://www.bantacs.com.au/QandA/index.php?xq=64

Then set up a line of credit to pay any extra expenses for the
rental properties. You are not required to use your wages income to prop
up investment properties. You can borrow to pay these expenses including
the interest on the loans when you are short and the interest on this line
of credit would be deductible also. "

1. Can I pay for Council (approx $1100 per year) and Water ($700 per year) and other repair costs from LOC and put my rent into offset of my PPOR? Will the Interest be tax-deductible?

2. If I do so, At what point I need to payback into LOC? Can I keep borrowing from LOC until I have borrowed complete $50K (for repairs on IP and other cost associated with it)? Will this mean I can claim tax deduction on full amount - $288K + $50K LOC. What is the rule for borrowing for IP from LOC? ATO should not see it as a way of increasing tax deductible borrowing and paying full rent into PPOR.

3. I am planning to get fencing done on the IP. Can I use LOC to pay for it? tax deductible again?

2011 Tax return had $13K loss claimed as negative gearing.
Income from Rent - $13K
Interest on Borrowing - $19K

Thanks
Aman