"I'm fishing a match tomorrow and the venue is near impossable to catch without using backleads"
I realise that I'm of no help to you here and by now I'm sure you are well into your match, but upon your return, would you be so kind as to explain the above?
I'm a little intrigued!
If you are referring to not having 'flying backleads' then I can understand to a degree, however if you were referring to the non-captive variety as mentioned previously, then I'm not so sure?
If you were worried about your line (whatever you use) being off the bottom and possibly spooking the fish, then I feel that it is probably more of a confidence thing, as although flying backleads will help, they are not the 'cure-all' that some claim!
It would be just as easy, and in a lot of situations, a lot better to just fish with a slack line and allow it to sink as much as it will.