[GetANet]

Here's my advice on keeping your herring alive, I talk to them and shower them with love and affection!
No, seriously Def use a cooler as big as possible, preferably with as rounded corners as you can find. But any well insulated cooler will do.
I have gone thru many of those white box airators and they flat out suck
I decided to buy one from Frabill costs like tweleve bucks and it works fantastic!
And you want an airstone that emits fine small bubbles.
I also use a product called Finer Shiner which helps tremendously.
Your losses will be minimal that way. A little ice in a ziplock bag will help cool the water if need be but normally I don't need to add ice.
I fish with herring all the time and buy a minimum of two dozen at a shot
Sometimes up to five dozen for a day and will only lose a couple this way.
I have heard rumor that there is some kind of foam isulator you buy from home depot or lowes that will fit a five gallon bucket but never researched it.
At least try to keep them shaded and well airated and that should help some. I think those flow troll bait buckets are not a good idea for a few reasons.
The surface water they float on is very warm and the shape is not well suited for herring lots of hard sharp edges and really not big enough.
I know this is a little hard to do in a kayak but keeping those baits alive is priority number one.
Hope this helps out some of you guys.
If you only use a five gallon bucket see if you can get a six gallon instead I use them quite a bit as well and think the little bit of extra water does help.
And last but not least I always remove any that appear to be close to or already dead as soon as possible....... Nuf Said!!!!! LOL!!!!