Hi Gregg and welcome
K2 has a point - if you are fishing at night, try for piers and harbours where (a) you get some shelter and (b) they are well lit hence no need for extra expense of headlight etc.
If you are based on the south side I would try Dun Laoghaire and use a three hook rig, say a two up one down - you can buy ready made rigs in most shops or off the Procast website (better mention out competition sponsors

) Bait is important and a worm bait works best on the bottom but try different baits and even combinations e.g. lugworm tipped with mackerel or squid. Ideally check here to see if there are any of the Dublin anglers heading off somewhere and I am sure they would give you a helping hand...
Blanking is all part of it: they call it fishing, not catching fish!
Tight lines, and if you are keen, why not join the SAI sea angling club - there are at least ten members based around Dublin for starters.