I hope you will forgive this Pacific Northwestern intrusion in your home-base forum, but I'm hoping you can help me out. I'm posting here since you hardy souls seem to be down with REAL cold-water diving. Here's my problem: My Suunto Sk7 is freezing up. I've been doing dives in freezing/near-freezing water temps and my compass is only good for about 10-15minutes and then the oil thickens up to where the card won't move. Have you found a good compass that will still function well at 0.5C? Thanks!