You could use a Rag tied to a rope thats secured somewhere. and soak it in Tuna Oil to get a nice constant trail happening
Its what i use off a jetty... might work for beach? i usually use the heshen bag at the beach or scatter the pellets on the sand just where the waves are lapping. Depending on the current.

Practice Practice Practice

We used to camp for long weekends on beaches, & at low tide we would bury all our scraps shallow @ the waters lines, this way, as the tide came in the smell used to come through the sand, but not wash our berley a way....do not try this in crocodile county but

Off the rock walls I still find that a handful of mushed up pilchards, some pollard and some tuna oil or some of that concent5arted fish emusulsion used for ferliser works if you throw it out ona regular basis.

If there is little or no wind, this still works at the beach.

If its windy a hessian bag or an onion bag with bits of oily fish in it, tied to stake near the water line works well.

I just go the $5 berley buckets and a bit of rope on the shore or in the water.

When your finished jst rinse it out. not as messy as a hessian sack to carry home.