You need to be spider rigging and even then useing some serious lead. Longline trolling becomes difficult to do once you go beyond 20 feet deep. Thats useing a jig or crankbait. I would go with at least a 1 ounce weight over my jig or minnow. if the wind is blowing then 1 1/2 to 2. You have to use all that lead to keep you down that deep when you move around any at all and if the wind blows. It will also help you detect the bite in that deeper water. CF
The Original Woodsgoat Hater
2011 NWR Bash Yellow Perch Champion