Mondo,
I broke a Daiwa Procaster X the same as yours in July spinning a metal slice which was too heavy, 30grams.
The last 2 years I have travelled down south to fish for Salmon with Bream gear off the beach, I love it.
I found Salmon hiding in amoungst the boulders next to the rocks in about a metre of water, SP's were useless as they snagged, but metal slices did the damage. Off the sandy beach bass minnows in blue pearl on an 1/8 round head worked a treat in the white water. The Salmon were cruising up and down the beach, we fished the gutters and holes, but always with white water.
There were seals and dolphins around so I think that's why they were under cover or in amongst the boulders.
4 lb is a lot of fun, use an 8 lb leader with a drag of just under 2 lb. Be patient, you can't bully a Salmon on that gear.
Howard.