To put it short, it's hands down the best sail I've ever used. I weigh 170 lbs (77 kilos) and use the 2010 Ices for 5.3 and smaller. The 2010 Ice carries over the power and then some from last years sails. The major change is the double clew grommet. The Ices have always been extremely sensitive to outhaul adjustments. By pulling the outhaul another 3cm you would go from full power to no power. For 2010 they took it even further. The outer clew grommet gives the sail a similar feel to the 2009 sails with lots of power and direct handling. The inner grommet setting is a very new feeling. The sail just twists off so far making it very soft and have a huge top end. I've had a chance now to sail 3.7, 4.2, 4.7, and 5.3 Ices along with my 5.9 Duke and across the board the double clew grommet works just as well with all the sizes. When I was getting too overpowered to try tricks, I simply changed the outhaul to the inner grommet and I've got total control again. It really is amazing! It's not like going from a 5.3 to a 4.7 but it's like changing the 5.3 to a 5.0 with a quick adjustment.
Another great thing about all these different settings is that you can really get any sail you want in just one sail. If you like the soft feel, use the inner setting, if you like a very reactive sail, use the outer setting. On top of all these adjustments, north now offers an "HD" Full X-Ply version for maximum durability. Can't ask for more than that! I took the HD Ice in the 3.7 and it was really nice too.
The Ice works just as well for freestyle as it does for waves. When the sail has wind in it, it gets a very deep pocket in it giving it all the power. What is unique is that when you try to make the sail go neutral, it goes perfectly flat. So whether you're trying an air funnel, or just a regular tack, the Ice will help you out with it's amazing handling. Going into a jibe or going down the line on a wave the Ice also goes totally neutral. It just feels so light.
If there ever was a time to buy a new sail, the 2010 Northsails Ice would be it. I really can't say enough good things about the 2010 Ice.
Pictures really don't do the new colors justice, but here are a few of my 2010 4.7 Ice.
Double clew grommets
Oversized pulleys make down-hauling simple
Boom length settings on the mast sleeve. As the boom goes up, the distance gets longer so check here for your outhaul setting. I find it best to leave it at the minimum outhaul settings. I actually use mine at 161cm or 162cm where I have the boom mounted here.
Always thinking about durability North puts plastic coating on wearable spots like on the mast tip, batten ends, and here on the foot stitching to prevent abrasion from the nonskid on the boards.
Admiring my 2010 4.7 Ice. Oh when can I use you again......