berkley gulp sandeel

anyone ever used them ,and if so do you retrieve them or just chuck them in the surf and leave it

ive used them and the gulp ragworm in kerry, i fished them on a running ledger and a 4 oz plain lead and i was casting them out and retyrieving them steadily across the bottom around deep rock marks and had a few pollock

I was thinking of trying them "weedless" on a worm hook and twitching them through shallow rock marks for sea trout and possibly bass. Anybody done it with any success?

Tried this a few times with the Gulp crab last year, but no result. I have my doubts about using them as a static bottom bait, think they probably need the bit of movement.