Not that I have ever done this but just my two sense:
Use cable, not rope or chains
Use blocks or poor ready mix in a bucket, if using blocks and a tree drill a hole through the trunk and run the cable through the tree.
Use a dead tree already down and cut most of the small branches, leave the big limbs
PVC works but sand the coating off the pipes
Do not use pallets or Xmas tress unless you like donating lures to the lake.
Green trees will work but fish seem to locate to dead trees sooner.
Most of all be careful in the winter and email me the GPS coordinates.