Simple debt management
Check out the market price
By choosing the pool-of-orders from which the borrower borrows, he therefore chooses the price at which he wishes to be liquidated. To avoid liquidation, the borrower simply needs to follow the market price and remember at what limit price he has placed his loan.
Borrowers set the prices at which their positions are closed for a loss.
Check out your excess collateral
If the borrower doesn't want to over-collateralize his loan, he can track his excess collateral and when his excess collateral falls below a given threshold, he can repay his loan or add more collateral.