I switch off between a drysuit and a wetsuit. I have found the best thing for me is to keep my head warm. So the first thing for me is to get a warm hat on. I have also am just recently trying a Surf-Fur (Surf_Fur Coat). I do a lot of ice diving in the winter months. I am hoping that this will provide added protection during the surface intervals as well as during line tending activities. Another nice feature is the ability to change clothes underneath it as many of my dive spots do not have bath houses to change in.