using calls to repair a bad trade,
Long ftse £10/pt from 4425, market moves to 4370, u are down £550 , instead of selling and taking loss, u can sell the June 4525 call and receive, £530 (30 days to expiry). So now you have wiped out a £550 loss, but u have sold the upside of your trade to the call holder, you maximum profit is now £1000 add the premium of £530, £1530
Be very careful 'selling' options my friend. They can really wipe you out.
i would ask yourself what happens if the FTSE level goes down another 100, 200 or even 300 points before expiry of your options? your loss on the FTSE future is gaining by £1000 per 100 points. Your only way of winning in this scenario is if the FTSE stays above 4370. thats a big gamble.