http://www.plasticfishcontainers.com/

I bought one of these drilled a hole in the top, have large oxygen cylinder attached in back of truck, ran hose through the hole with large diffuser at end of hose. Fits between wheel wells on pickup, and used a tie down across the top. Have hauled 4-6 pound bass in the dead of summer in excess of five hours many times and have yet to lose a fish. just my 2 cents.