Speardiver wetsuit for cold lake diving question

Willl it be plenty for 40degree water? I don't know if you could say plenty. My 7mm keeps me warm for a solid couple of hours in 46-48degree water. That being said, once you get cold in those temps, you get really cold. 40degrees is absolutely frigid, but I would imagine the suit (provided it fits well) would give you 1.5-2hours of comfortable time in the water.

To be clear Sames' asking about an open cell suit. Here's one relevant review http://spearfishing.world/74422-post8.html

I would think that good gloves and booties would play a big roll in those temps.

I do not have a Speardiver suit but I do have a 5mm open cell omer. I dove Northern california in 48 degree waters and was comfortable enough to shoot some fish and get a limit of abalone. I don't remember how much time I spent in the water but I remembered being ok. If I where to live in Norcal I would probably buy a 7mm for a little more comfort in the winter and more time overall in the kelp beds.

I have 5mm open cell socks that match your suits. They will be warmer than 7mm double lined.

Get the 5 mm socks. You won't regret it. Being comfortable is more important than a little bit warmer. A 7 mm sock will stop your blood flow and you will get cold.

I dive with a 7mm open cell wetsuit all the time. That said, the coldest water I dive in is 49 degree F. My face went numb, but I was OK for about an hour before getting cold. My cold tolerance is crap, though. It really depends on the type of diving you do. I do mostly aspetto, so I'm motionless a lot. If you're moving a lot, that will make all the difference, but your dive times will be short. For me, I wouldn't even think about going to 5mm until the mid 60 degree water. Keep in mind, the surface temp is often ten degrees water here, than 30 feet down.

Speardiver suits are top notch gear. One nice thing to do before you put them on, is to pour warm/hot water into them so you can slip easy on them and get a warm feeling right away. You´ll feel very confortable and will never be cold.

Just mix the hot water with a 50% hair conditioner or skin moisturizer solution. It will slip like a dream!

Where I live, the sea ranges from 36-37F (April/May) up to 52F (late August). I wear a 7mm Elios open cell suit with 5mm socks all year round, and switch between 6.5mm three-finger mittens and 5mm gloves depending on temp. A highly flexible (the cold makes them go stiff) open cell suit of 7mm thickness (potentially more) is a must for me in these conditions. Around 40F and below I usually don't last more than 1.5 hrs, normally less. Also, make sure the gloves/mittens and socks hav a good seal against the suit. My socks and gloves/mittens all have "slick surface/closed cell" neoprene where they meet the suit, and they always go on the inside of the suit: absolutely zero leakage that way. The second important thing is the shape of the hood. 40F and below will make your sinuses and chin/jaw pay if they're not properly covered. Also, the thick neoprene will squeeze your jaw "into" your face if the part of the hood which is covering it isn't shaped correctly. That'll get painful in quite a short time and can also cause your hood to slip off the jaw; that'll get cold real quick.
The hot water tip is a good one, both for making suit slip and also to heat up after a dive. Just fill the suit with hot water when you're done and you're nice and toasty in seconds.

Mix the conditioner with water in a spray bottle. Start with two tablespoons of conditioner and see how slippery you like the suit. Next time you can reduce the amount of conditioner to your liking. Don't wait to do it on your dive day, try it at home now.

Which reminds me.. Lunkerbuster where's my spray bottle?

At my dads house lol. He found it in the boat. Ill get it for you next time I'm there.

Yeah. For the record, mark told me he'd get it back to you