Main tactic seems to be small hooks, using ragworm purchased from the local tackle shops.. Spanish Shore Anglers use much lighter gear than we do here in the UK, going down to size 4 or 6 hooks, fished at distance ... they do not seem to have the big fish much within casting range,they do sometimes catch reasonable Bass, but mostly smallish stuff.... another thing they do is to fish for Squid , mostly at night, using a Squid lure under a float,close in, they use a lamp to attract the quid, sometimes really catching bucket loads.
The next time I go I will only take a travel rod that breaks down into about 2 feet sections, and has an action of about 3lb TC or less,and about 11-12 feet long, coupled with a decent fixed spool, loaded with 12lb line.