If you stick to the right hand side you will be relatively free of snags, there are still little pockets of mussel there as ive pulled in a few which have closed on my hooks but nothing to be very worried about. As Creep says tho, you will find it hard to hold bottom with a 6oz if the tide is ripping through, ive found however, once you cast out, stop spooling line out and start walking to the right with the rod, it seems to help set the grips on the lead and you should hold without too many problems, certainly worked for me whenever i did this....
I also found that of the few codling i caught here none of them registered any hits on my line, i only realised they were on whilst i was reeling in to change bait, and on the note of changing bait, be prepared to do this often as the crabs there are prolific !!!