Would like some opinions on using oxygen for baitfish and how you use it.

I ice my baitfish. If you want to keep some alive just use peroxide in the water. A cup for every 15 gallons of water will supercharge your baitfish.

In the boat or are you wanting to keep them alive at the house ?

I've been looking into getting a bait tank but the price always detours
me from pulling the trigger. They are definitely pretty cool though as they
can run on a car/boat battery for several days and include filteration
and aerators.

http://www.graylinebaittanks.com

They have a oxygen thing at Walmart for baitfish buckets/tanks etc.

I just recently bought an aerator from Academy. They have this little tiny one for $5 that works for up to 3 gallons. I duck taped it onto a 5 gallon bucket and its worked great so far. They also have bigger ones for more water.

I've got 10 big bluegill in there right now waiting for me to get off work and go fishing tonight.

A buddy and his father have one and it is pretty slick. That will be my next big investment!