Modern sailing gear

Age old problem with smoothskin neoprene.  It keeps you warmer, but doesn't have the same longevity.

I have just bought the Mike Lennon Year Round Dry System (at sale price!) Very impressed so far: warm and dry as stated. It's very soft rubber so it remains to be seen how durable it will be.

I've been very surprised at how warm this 'new' thin neoprene stuff can actually be - when it fits properly.
I moved to Long John/Rashie or Thermal top / good spray top / socks and decent boots...... I've sailed my 600 over the winter in that kit and never really got massively cold (there's still a LOT of swimming going on!)- Magic Marine and Gill Long johns is what I'm using.

My best buy for a really comfortable time has been a Billabong foil steamer.... sailed the 600 for about 4 hours with 20 capsizes recently - and only near the end was any dampness starting to seep through.

Go for blindstitched and you'll be pleasantly surprised at how effective this layering concept can be.

The super thin ones won't be enough, but both Neil Pryde and Zhik do a thicker winter grade material... That's good stuff, and loads better than your average hiker/pencil case/mouse mat grade neoprene of the lower end brands.

I'm middle aged bordering on old git who sails 200's & Radials.
I've managed 2 soft southern winters in my 3mm Gull code zero long johns.
I like having 2 flock/pile lined rashies, pref one short sleeve & 1 lomg.
Rooster PP leggings and Aquafleece.
In the cold I wear my bouyancy aid under the Aquafleece, warmer.