There's some big yellers under the sunken bridge here, but for everyone I catch, I lose half a dozen rigs.

You have to get a paternoster rig less than a metre from the bridge other wise you blank............except for catties! Due to the variable wind, I had to fish horizontal to the bridge so even with the drag locked up, they can run forward for slack and then under. Fishing at right angles to the bridge is the go as you can pull 'em straight towards you, but there ain't that many days when the wind is in your favour.