I fished Llyn Blodwyn about a month agn the dam wall,left hand corner peg.
Very good fishing,plenty of decent Carp to around the 5-8lb mark odd doubles have shown recently.
I caught well on meat and soft hookable pellets,feeding micros close in.
There are some very good quality and conditioned Roach and Rudd if thats your game,up in the water on maggot.
According to the locals,who fish it regular,who ive got to know with me having spent alot of my time at Benllech,baits blow very quickly on there,meat will work for a few days then they go off it so take a variety and im sure you will do well.
Theres also water off the main road from Benllech to Llangefni (pretty much facing Treetops rugby club) Tudth Sargent very shallow,but again roach,skimmers rudd dominate with odd carp as well.