I have used these before. I can only use them from Dec to Mar because the weed growth is so immense in the lakes that I fish. Some things to keep in mind:
1. You will need a bait glue to seal the bait back up after inserting because you will have to cut the bait open to get the weight inside
2. The bait must be a full hollow belly because the insert takes up so much space in the bait
3. It is difficult to re-rig on the fly so consider having multiple set ups before going out
It is a really nice deal if you make hollow belly's I highly recommend them.
