These are the parts you will need for this rig.

First you need to cut the swivel off of your lead.

Then Loop to Loop knot your lead onto your 3’ length of leadcore.

Slid your rubber arrow bead down over your lead loop and follow that with one of your 4mm rubber beads.

For your rig you first have to tie a ‘D’ Rig to your hook. Tie a Knotless Knot and then slide a 1mm ring over your tag end, push the tag end back through your eye and burn the end with a lighter so the tag cannot come back through.

Add a small flexi swivel about an inch away from your ‘D’ ring.

Then tie on 8” of black amnesia, and finally add a lump of Kryston’s heavy metal for your counter weight.

Slide you rigs swivel down your leadcore and follow it up with your second rubber bead.

This rig has proved very effective for me in the past.
Me with ‘Arfur’ at 30lb 4ozs from the New Forest Water Park.