I have all my noodles set at about 3' to 3.5'
I make a trip out to the spill way a couple times a month and catch as many finger mullet as I can and use them for bait when I can catch them. We fished at about 1pm to 2pm that day and all were blues except 1 channel.
Location was on the west side of the big island visible from the north side of the 1960 bridge. There are plenty of cats out there so location of where we caught them isnt a big deal to me.
We fished in about 7-11 feet of water. After years of fishing with noodles we seem to catch blues 99% of the time. Seems like they come off of the bottom to eat since we are catching them with just 3' leaders.
Hope this info helped a little.