What's pilings? For the deep fishing you cast out or do you just let it drop in front of you? When I went on the party boat the mate told me to let it go all the way ti'll the reel stops spinning, lock it, then reel in 3 times to get the sinker off the bottom. Why do you think that is done?
they say that because your drifting across the bottom, you reel the bait up a couple feet to keep it of the bottom and from getting stuck, on bridges you dont do that, because your not drifting... fishing on a boat and a bridge or pier is a totally different ballgame.. it takes time to learn how to fish bridges, ive caught plenty of mutton,grovers, and grouper off the bridges in the keys... and its because i put in so much time to figure out the bridges and what to do on which bridge... if you have any questions pm me and let me know where ur fishin and ill slide you some info that should be able to put you on some fish..