If you caught a fish to weigh in.....

[ThrowingTimber]

saltwater ice slush

saltwater/raw water ice even better

[Squid kids Dad]

Water and lots of ice

[SirWinston]

If icewater slush is not available, place the fish in a big bin bag (33 gal or bigger), placed in a freshwater icewater bath in a cooler. Lost less than 1/2lb on a 26lb fish overnight that way.

[In The Surf]

Originally Posted by ThrowingTimber

saltwater ice slush

saltwater/raw water ice even better

or

blocks of ice and wrap the fish in a towel or two soaked in seawater in the cooler