A 7mil one peice will be adiquate, but adding a vest over or under would help. Definately invest in thick gloves, hood and booties. That is where most of your heat loss will be.
I did the Channel Islands back in the earily '90s and I was diving just a farmer john 5 mil, but I was diving a lot back then. I was fine.
Strip down after each dive to at least your waist and dry off. That and putting on something warm will make a big difference. I always carry a boat coat (long fleece lined swimmers parka) when I dive cold water from a boat here on the west coast.
By the way, the visability is better in December and Janurary when the water is colder than it is when the warmer water excites the alge and plankton.
You can't fish the Channel Islands, marine preserve. So forgo the fishing license.
I did the Channel Islands back in the earily '90s and I was diving just a farmer john 5 mil, but I was diving a lot back then. I was fine.
Strip down after each dive to at least your waist and dry off. That and putting on something warm will make a big difference. I always carry a boat coat (long fleece lined swimmers parka) when I dive cold water from a boat here on the west coast.
By the way, the visability is better in December and Janurary when the water is colder than it is when the warmer water excites the alge and plankton.
You can't fish the Channel Islands, marine preserve. So forgo the fishing license.