Right there are two options from the shore.
Easiest one is to just thread a 1 or 2oz barrel or ball lead onto your 30lb running leader.
Next add a 4 or 5mm bead.
Tie on a smaller swivel (sz 10 Mustad diamond eye).
Then tie on your snood, about 3ft of 20lb clear mono. (Mustad Ayaka or Berkley Vanish is good)
Then all you do is tie on your shad and away you go.
The second, which is not as good and will recieve criticism is to;
Firstly add a size 1/0 Mustad oval link to the middel, downwards pointing eye of 60lb Mustad 3-way swivel.
Tie you main line to one end of the 3-way swivel and again add a 3-4ft snood.
Finally tie this to you your shad.