I have had some great huss sessions at Uwchmynydd, which is right on the tip of the peninsula opposite Bardsey Island. There is parking, if you go into the village of Aberdaron there is a right hand turn out of the village over a small bridge, if you carry straight on its a dead end at the beach, so you'll know if you missed it. Follow this road till it ends in a grassy parking lot. I found that the best fishing is either to the left or right of the parking, as facing Bardsey direct the tidal race through Bardsey sound is unbelivable (5-6 knots on springs). I would go left as the ground is slightly less snaggy, but you must incorporate a rotton bottom to ensure getting the fish in as often your lead is swept into a snag by the tide, fish the neaps if you can. Now until Late May is the prime time as they are inshore to deposit their egg cases.
As for bait, I found that a half fillet of mackeral wrapped in squid, bound into a sausage with bait elastic worked best. Expect also, conger, small ling, monster three bearded rockling (potential record fish), its amazing that a 2-3lb fish can swallow a huge bait like that, and don't forget the enivitable doggies. I would recommend taking a light rod and some hardback crabs and rag to fish down the sides for wrasse and occasional pollack.
Its a great venue and avoids the busy Trefor pier, never fished there myself.
Best huss I had was 14lb5oz, double figure fish are common enough. Nothing is a certainty, but I never fished there at this time of year and failed to get at leat 3 huss a session.